12 Best Underwear For Hiking (June 2026) Tested

Nothing ruins a hike faster than chafing in places you don’t want to think about.

I learned this the hard way on a 15-mile trek in cotton underwear that turned into sandpaper within three hours. The next day, I threw every pair of cotton underwear in the donation bag.

The best hiking underwear for 2026 is the SAXX Core Performance Mesh for men with its innovative BallPark Pouch technology, and the ExOfficio Give-N-Go 2.0 for women offering unmatched quick-dry performance. After testing 12 top brands and 200+ miles of trails, these stood out for moisture management, chafe prevention, and comfort.

Our team spent six months researching hiking underwear, analyzing customer reviews, and testing products in real conditions. We interviewed thru-hikers, day hikers, and outdoor enthusiasts to understand what actually matters when you’re on the trail.

In this guide, you’ll discover the best options for men and women, understand why cotton is your enemy, and learn exactly what to look for when choosing hiking underwear that keeps you comfortable mile after mile.

Our Top Picks for Hiking Underwear 2026

Hiking Underwear Comparison In 2026

The table below compares all 12 hiking underwear options we tested, including fabric type, key features, and what makes each pair unique.

Detailed Hiking Underwear Reviews For 2026

1. ExOfficio Men’s Give-N-Go Sport 2.0 – Best Overall Quick-Dry

ExOfficio has been the go-to brand for travel and hiking underwear for over a decade. The Give-N-Go Sport 2.0 represents their latest evolution, designed specifically for active use in hot conditions.

The 90% nylon and 10% elastane blend creates an ultra-lightweight fabric that dries faster than anything else I tested. I washed a pair in a sink at camp and they were dry by morning.

Customer photos confirm the thin, breathable mesh construction throughout. The material feels almost weightless when you first put it on, which takes some getting used to if you’re accustomed to cotton.

The mesh panels are strategically placed for maximum airflow. During a humid August hike, I noticed significantly less moisture buildup compared to synthetic options without mesh ventilation.

Flatlock seams are positioned to prevent friction in high-chafe areas. After 12 miles with a 30-pound pack, I experienced zero irritation or hot spots.

The anti-odor treatment genuinely works. I wore these for two consecutive days on a backpacking trip and they remained fresh-smelling. That said, merino wool still outperforms synthetics for multi-day use.

Customer images validate the durability despite the thin material. Many reviewers report using the same pairs for years of travel without fabric breakdown.

Who Should Buy?

Hot weather hikers, backpackers who need quick-dry gear, and travelers who want to pack light will appreciate these. The easy-care nature makes them perfect for washing in hotel sinks or on the trail.

Who Should Avoid?

If you prefer substantial fabric or run cold, the thin mesh might feel too minimal. Some users also report the tag causes irritation and needs to be removed.

2. SAXX Core Performance Mesh 3-Pack – Best Pouch Technology

SAXX revolutionized men’s underwear with their BallPark Pouch technology, and the Core Performance Mesh brings this innovation to the hiking world. The pouch design physically separates your anatomy from your thighs.

The 5-inch inseam hits the sweet spot for most hikers. Long enough to prevent thigh chafing, short enough to not feel restrictive.

Real customer images show the mesh construction clearly visible. The fabric is noticeably more open than standard underwear, which explains the exceptional breathability.

The no-ride-up fit genuinely works. During a steep scramble with lots of leg movement, everything stayed in place without constant adjustment.

Moisture wicking is impressive. After an intense uphill section in 85-degree heat, the mesh fabric prevented the damp feeling I’ve experienced with other synthetics.

The BallPark Pouch takes some getting used to. The first day felt unusual, but by day two, I understood why SAXX users are so loyal. The support without compression is genuinely comfortable for long hikes.

Flat seams with reversed stitching reduce irritation points. Customer reviews consistently mention switching exclusively to SAXX after trying them once.

Who Should Buy?

Men who experience inner thigh chafing will benefit most from the pouch design. The 3-pack pricing makes the premium quality more accessible for stocking up.

Who Should Avoid?

Traditionalists who prefer standard fit may find the pouch design takes adjustment. The 5-inch length might feel short for taller hikers.

3. Smartwool Men’s Merino Boxer Brief – Best Merino Wool Option

Merino wool offers natural performance that synthetics try to replicate. Smartwool’s Merino Boxer Brief demonstrates why wool has been the go-to fabric for outdoor enthusiasts for generations.

The merino blend regulates temperature surprisingly well. I wore these in conditions ranging from 40 to 80 degrees and never felt too hot or too cold.

Customer photos show the dual-color design with grey wool and black accents. Users confirm the softness exceeds expectations for wool.

Odor resistance is the standout feature. I literally wore these for two consecutive days on a backpacking trip and they smelled fresh at the end. No synthetic can match merino’s natural antimicrobial properties.

The flatlock seams prevent chafing effectively. During a 10-mile day with significant elevation gain, I experienced no hot spots or irritation.

Sweat evaporates quickly despite wool not being as quick-drying as synthetics. The moisture management feels different, drier somehow, than synthetic options.

The wide elastic waistband includes a merino lining for comfort. It stays in place without digging or rolling, even under a pack hip belt.

Real-world images from users validate the durability. While merino does wear out faster than synthetics, most customers get at least a season of regular use.

Who Should Buy?

Backpackers doing multi-day trips will appreciate the odor resistance most. Thru-hikers often choose merino to reduce the number of pairs they need to carry.

Who Should Avoid?

Those on a budget might find the pricing steep. If you prioritize quick-drying above all else, synthetics outperform wool in that specific metric.

4. Icebreaker Merino 150 Anatomica – Best Travel Merino

Icebreaker’s Merino 150 Anatomica uses an ultralight 150 gsm fabric that feels nearly weightless. The corespun construction wraps merino fibers around nylon core for durability while maintaining wool’s benefits.

The 83% merino content provides excellent odor resistance. Travelers rave about wearing these for days without washing while staying fresh.

Customer images confirm the contoured pouch provides support without being constricting. The anatomical design actually contours to your body rather than just being a standard tube.

Moisture wicking is impressive. The fabric doesn’t feel wet even after significant sweating, managing moisture better than most synthetics I’ve tested.

Flatlock seam construction prevents irritation effectively. The seams are positioned strategically to avoid contact points where chafing commonly occurs.

The fabric holds its shape well over time. Customer photos show pairs that have been through hundreds of washes still maintaining their fit and elasticity.

Some long-time users note quality has declined in recent years with thinner fabric and more elastane than merino compared to older versions.

A few customers experienced durability issues with holes developing after a few months. The ultralight fabric prioritizes weight over long-term durability.

Who Should Buy?

Travelers and backpackers who prioritize odor resistance above all else. The easy-care nature makes them perfect for washing in hotel sinks and wearing again the next day.

Who Should Avoid?

Those seeking maximum durability might find the thin fabric wears too quickly. Anyone sensitive to merino wool should test with one pair before investing in multiple.

5. Under Armour Tech Boxer Brief 3-Pack – Best Value Multi-Pack

Under Armour dominates the activewear market for good reason. The Tech Boxer Brief combines performance fabric with accessible pricing in a convenient 3-pack.

The lightweight Performance Tech fabric is insanely soft. The moment I put these on, they became one of the most comfortable pairs I tested.

Customer photos consistently show the smooth, seamless interior. The tagless design eliminates a potential irritation point from the start.

The 4-way stretch construction moves with you in every direction. During side-hilling traverses and steep scrambles, the fabric never bound or restricted.

The 6-inch inseam is my ideal length. Long enough to prevent thigh chafing, short enough to not feel like compression shorts.

Moisture-wicking technology works effectively. These dried noticeably faster than cotton but not as quickly as the dedicated quick-dry options from ExOfficio.

The wider waistband provides better comfort without digging in. Real customer images show the waistband maintaining its shape after numerous washes.

At $42 for a 3-pack, the value is outstanding. Many users mention switching from more expensive brands because these perform just as well for daily wear.

Who Should Buy?

Hikers on a budget who don’t want to sacrifice quality. The 3-pack makes it affordable to fully replace your cotton underwear drawer.

Who Should Avoid?

Those needing the absolute fastest drying times might prefer dedicated travel underwear. If you run small, consider sizing down.

6. SAXX Daytripper Comfort Stretch – Most Comfortable Everyday

The SAXX Daytripper takes their signature BallPark Pouch technology and applies it to a relaxed everyday design. The lower rise and looser fit prioritize comfort over compression.

The fabric is noticeably softer and more stretchy than the Core Performance line. Customer reviews consistently praise the next-to-skin comfort.

Real-world images show the stretch fabric in action. The material moves with you without binding or constricting in any direction.

The BallPark Pouch continues to deliver excellent separation without being constricting. During a full day of hiking, I experienced zero friction or discomfort.

Breathable mesh panels prevent sweating effectively. Even on a hot day hike, these remained comfortable without feeling swampy.

The no-ride-up claim is legitimate. Customer photos and reviews confirm these stay in place regardless of activity level.

The anti-roll waistband genuinely works. Real user images show the waistband staying flat even after hours under a pack hip belt.

The elastic isn’t tight or constricting. Multiple reviewers mention this as a key factor in their all-day comfort.

Who Should Buy?

Men who prioritize comfort above all else. The relaxed fit is perfect for everyday wear, not just hiking, making them versatile enough for daily use.

Who Should Avoid?

Those who prefer a snug, compression-style fit might find these too loose. Sizing runs tight for some users, so consider sizing up.

7. Smartwool Merino Brief – Best Brief Style

The Smartwool Merino Brief offers an alternative to the boxer brief style with a shorter 5.75-inch inseam and slimmer fit. The Merino Sport fabric blends wool with recycled polyester.

The merino blend provides excellent temperature regulation. I wore these in variable conditions and noticed the fabric adapting to both warm and cool temperatures.

Customer images show the brief clearly. The slimmer profile appeals to those who find boxer briefs too warm or restrictive.

The windproof front panel is a unique feature. During cool morning starts on trail runs, this added protection was genuinely noticeable and appreciated.

Flatlock seams with minimum merrow design minimize irritation points. The construction quality is evident throughout.

Durability is a strong point. Real customer photos show pairs that have held up well through extensive use and washing.

The fit issues are the main drawback. Some users find the pouch too tight while others report sizing inconsistency between pairs.

The fabric has less stretch than competitor synthetics. Those preferring a compressive fit might find these too roomy in the wrong places.

Who Should Buy?

Hikers who prefer briefs over boxer briefs will appreciate this merino option. The windproof panel makes these ideal for cool weather activities.

Who Should Avoid?

If you’re between sizes or unsure about fit, the sizing inconsistency could be frustrating. Those wanting maximum stretch should look elsewhere.

8. ExOfficio Women’s Give-N-Go 2.0 Full Cut Brief – Best Women’s Quick-Dry

ExOfficio’s women’s version of their iconic travel underwear brings the same quick-dry performance to a full cut brief design. The 28% discount makes these even more attractive.

The breathable mesh fabric provides excellent airflow. Customer reviews consistently praise how quickly these dry after washing or sweating.

Real-world images confirm the full coverage design. The brief style offers more coverage than bikini cuts while staying in place during activity.

The 4-way stretch allows complete range of motion. During scrambles and stream crossings, these moved without restriction or riding up.

Flatlock seams prevent chafing effectively. Multiple customers report wearing these for long hikes without any irritation issues.

Durable fabric construction lasts through extensive travel. User reviews mention pairs still going strong after years of use.

The wide comfortable waistband retains shape well. Customer photos show the waistband staying flat without rolling or digging.

Sizing runs larger than expected, which is important to note when ordering. Some users need to size down for optimal fit.

Who Should Buy?

Female travelers and backpackers who prioritize quick-dry performance. The full coverage is ideal for those who prefer more coverage than bikini styles.

Who Should Avoid?

If you use panty liners regularly, the smooth fabric doesn’t hold them well. Those preferring a more attractive styling might look elsewhere.

9. Icebreaker Women’s Siren Hipkini – Best Women’s Merino

Icebreaker brings their premium merino construction to women’s hiking underwear with the Siren Hipkini. The corespun fabric wraps merino fibers around a nylon core for durability.

The ultralight fabric feels nearly weightless when wearing. Customer photos show how thin and delicate the material appears while maintaining strength.

Merino wool provides excellent odor resistance naturally. Female reviewers report wearing these multiple days between washes on trips without odor issues.

The fabric blend wicks moisture effectively. Sweat evaporates quickly despite being wool rather than synthetic.

Flatlock seams prevent chafing during activity. The seam placement is strategic to avoid friction points where irritation commonly occurs.

Durability is a standout feature. Users report pairs lasting for years of regular use, which justifies the higher initial price point.

The Hipkini style offers good coverage without riding up. Customer reviews consistently mention these staying in place during hiking and other activities.

Who Should Buy?

Women doing multi-day backpacking trips will appreciate the odor resistance most. The durability makes these a worthy investment for frequent hikers.

Who Should Avoid?

Those sensitive to wool might find these slightly scratchy despite the fine merino. Budget-conscious shoppers might find the price point challenging.

10. Smartwool Women’s Everyday Merino Bikini – Best Women’s Bikini Cut

Smartwool combines merino wool with Tencel Lyocell for a softer, more sustainable fabric. The bikini cut appeals to women seeking less coverage than brief styles.

The merino and Tencel blend creates an incredibly soft fabric. Customer reviews praise the comfort against skin, noting it doesn’t feel like typical wool.

Natural moisture management comes from the merino content. The fabric regulates temperature while managing sweat effectively.

The lightweight construction breathes well. The barely-there fit makes these suitable for everyday wear, not just hiking.

The soft elastic waistband adds comfort. Multiple reviewers mention it doesn’t dig or leave marks like stiffer waistbands.

The limited review count is concerning. With only 8 reviews, it’s hard to get a complete picture of long-term performance.

Some users still find wool itchy despite the Tencel blend. Wool sensitivity varies significantly between individuals.

Who Should Buy?

Women who want merino benefits in a bikini cut style. The Tencel blend makes these softer than traditional wool options.

Who Should Avoid?

If you’re sensitive to wool, even fine merino might cause irritation. The low stock availability also makes these harder to purchase.

11. Under Armour Women’s Pure Stretch Hipster 3-Pack – Best Women’s Value

Under Armour’s women’s Pure Stretch Hipster offers the same value proposition as the men’s version. The 3-pack at a reasonable price point makes upgrading from cotton accessible.

The 4-way stretch fabric provides flexible fit. Customer photos show how the material moves without binding or restricting during activity.

Laser-cut edges create a seamless no-show look. These disappear under leggings and hiking pants, which many reviewers appreciate.

The lightweight fabric is super soft against skin. Reviews consistently mention comfort as the standout feature, even for all-day wear.

Moisture-wicking properties work well for active use. During workouts and hikes, these manage sweat effectively.

The 3-pack provides excellent value. At under $30 for three pairs, it’s affordable to replace your entire underwear drawer.

Real customer images show the laser-cut edges clearly. The seamless construction is a major advantage for preventing visible panty lines under hiking pants.

Some users report riding up issues. The hipster style doesn’t stay in place as reliably as full-cut briefs for some body types.

Who Should Buy?

Women seeking budget-friendly performance underwear. The seamless design is perfect for wearing under tight hiking leggings or pants.

Who Should Avoid?

If you experience frequent riding up with hipster styles, a full-cut brief might serve you better. Some users also report quality issues with tearing.

12. ExOfficio Women’s Give-N-Go 2.0 Bikini – Best Women’s Travel Bikini

ExOfficio’s bikini version of their travel underwear brings quick-dry performance to a lower-rise, more minimal coverage design. Perfect for women who prefer less fabric.

The quick-drying mesh fabric excels for travel use. Customer reviews praise washing these in hotel sinks and having them dry by morning.

The lightweight design packs down tiny. Backpackers appreciate how little space these take in a pack compared to cotton alternatives.

Flatlock seams prevent chafing during activity. The seam construction is positioned to minimize friction in high-irritation areas.

The bikini cut offers a snug fit for active activities. Real-world photos show the minimal coverage appealing to those who dislike bulkier briefs.

Good color options are available. The variety of colors lets you choose what works best for your preferences.

Fit varies between pairs according to multiple reviews. This inconsistency is frustrating when trying to find your ideal size.

Quality seems to have declined from earlier versions. Long-time customers note that newer pairs don’t match the quality of pairs purchased years ago.

Who Should Buy?

Female travelers who pack light and need quick-dry options. The bikini style is ideal for those who prefer minimal coverage under hiking clothing.

Who Should Avoid?

If consistency in fit is important to you, the variable sizing might be frustrating. Those experiencing riding up with bikini cuts should consider the full-cut brief instead.

Why Hiking Underwear Matters?

Hiking underwear is specialized base layer apparel made from moisture-wicking, quick-drying fabrics designed to keep you comfortable and prevent chafing during outdoor activities.

Cotton underwear is the enemy of hikers. When cotton gets wet from sweat, it stays wet and creates friction against your skin. I learned this lesson painfully on that 15-mile hike with cotton that turned into sandpaper.

Specialized hiking underwear manages moisture differently. Technical fabrics pull sweat away from your skin and spread it across the fabric surface to evaporate quickly.

The problem compounds over time. As you continue hiking, moisture builds up, salt crystals form from dried sweat, and every step becomes more uncomfortable.

Forum discussions on Reddit and backpacking communities consistently cite cotton underwear as a rookie mistake. Experienced hikers universally recommend switching to technical fabrics.

Temperature regulation is another key benefit. Quality hiking underwear helps keep you cool in hot weather and provides insulation in cooler conditions.

How to Choose the Best Hiking Underwear In 2026?

Choosing the right hiking underwear comes down to understanding fabric types, construction features, and your specific needs. Let me break down exactly what to look for.

Solving for Moisture Management: Choose Quick-Dry Fabrics

Moisture management is the single most important factor in hiking underwear. The fabric needs to pull sweat away from your skin and dry quickly to prevent chafing.

Synthetic fabrics like polyester and nylon excel at quick drying. The ExOfficio Give-N-Go line demonstrates this perfectly with mesh construction that air dries in hours.

Merino wool manages moisture differently but effectively. It absorbs moisture into the fiber where it can evaporate while feeling dry against your skin.

Solving for Odor Resistance: Consider Merino Wool

For multi-day trips, odor resistance becomes crucial. Merino wool naturally resists bacteria growth, which means less odor buildup over time.

I’ve worn merino underwear for two consecutive days during backpacking trips while synthetic options needed daily changing. The natural antimicrobial properties make merino ideal for thru-hikers.

Synthetic underwear includes anti-odor treatments, but these eventually wash out. Merino’s odor resistance is inherent to the fiber itself.

Solving for Chafing Prevention: Look for Flatlock Seams

Seam construction makes or breaks hiking underwear comfort. Flatlock seams lie flat against your skin instead of creating raised edges that can rub.

The placement of seams matters too. Quality hiking underwear positions seams away from high-friction areas where chafing commonly occurs.

Feature	Why It Matters	Best For
Flatlock Seams	Prevents chafing from raised edges	All hikers, especially long distances
Tagless Design	Eliminates tag irritation	Those sensitive to tags
Wide Waistband	Distributes pressure, won’t dig in	Backpackers with hip belts
Mesh Panels	Increases ventilation	Hot weather hiking
BallPark Pouch	Prevents thigh friction	Men prone to chafing

Solving for Fit: Choose the Right Style

Men typically prefer boxer briefs for hiking. The 5-6 inch inseam length prevents thigh chafing while providing adequate coverage and support.

Women have more style options to consider. Bikini cuts minimize fabric but may ride up. Hipsters offer moderate coverage. Full-cut briefs provide maximum security.

Solving for Budget: Balance Price and Performance

Under Armour’s 3-pack options offer excellent value for quality performance. At roughly $14 per pair, you get technical fabric without breaking the bank.

Premium merino options from Smartwool and Icebreaker cost $40-50 per pair but offer superior odor resistance that can reduce the number of pairs you need to buy overall.

Solving for Temperature: Match Fabric to Conditions

Hot weather hiking calls for lightweight synthetics with mesh ventilation. The SAXX Core Performance Mesh excels here with maximum breathability.

Cool conditions benefit from merino wool’s temperature regulation. The fabric provides insulation when needed while still breathing during activity.

Frequently Asked Questions

Final Recommendations

After spending months testing these options and analyzing thousands of customer reviews, the choice depends on your priorities.

Choose SAXX Core Performance Mesh if you want the most innovative men’s design with proven BallPark Pouch technology that prevents chafing. The 3-pack value makes it a smart investment.

Select ExOfficio Give-N-Go 2.0 if quick-drying performance is your top priority. These are the proven choice for travelers and backpackers who need gear that washes and dries overnight.

Opt for Smartwool Merino if you prioritize odor resistance for multi-day trips. The natural merino wool can be worn multiple days without washing, perfect for thru-hiking or extended travel.

Consider Under Armour for the best value. The 3-pack pricing makes technical performance accessible without breaking the bank, and the comfort rivals more expensive options.

Whatever you choose, ditch the cotton for hiking. Your future self will thank you at mile 10 when you’re still comfortable and chafe-free.