Bear Butt Rain Fly Review (January 2026) Tested
I’ve spent countless nights hammock camping across the Pacific Northwest, testing gear from premium brands to budget alternatives. When I first spotted the Bear Butt Rain Fly at a fraction of the cost of big-name options, I was skeptical.
After three months of field testing including an unexpected thunderstorm in the Olympics, I can confidently say the Bear Butt Rain Fly is the best budget hammock tarp for beginners seeking reliable waterproof protection without the premium price tag.
If you are looking at the best tents with full rainfly, you might also appreciate this hammock alternative that offers similar protection at a lower weight.
In this review, I’ll cover everything you need to know: real-world waterproof performance, setup techniques, durability observations, and whether this budget tarp actually delivers on its promises.
Article Includes
What is the Bear Butt Rain Fly?
The Bear Butt Rain Fly is a budget-friendly hammock tarp designed to provide waterproof protection for hammock campers.
This 11×9 foot polyester tarp weighs just 16 ounces and comes complete with guy lines and stakes for immediate setup.
What sets it apart is the combination of genuine waterproofing capability at an entry-level price point that makes hammock camping accessible to newcomers.
Rain Fly: A waterproof tarp suspended above a hammock to shield the occupant from rain, wind, and snow while allowing ventilation.
Bear Butt Rain Fly Specifications 2026
Bear Butt Hammock Rain Fly - 11 x 9 ft Ultralight Waterproof Hammock Tarp for Camping
Size: 11x9 ft
Weight: 16 oz
Material: Waterproof polyester
Includes: 4 guy lines, 2 stakes
✓ The Good
- Ultralight design
- Waterproof polyester
- Easy setup
- Reflective guy lines
- Great value
- Compact pack size
✕ The Bad
- Only 2 stakes included
- Diamond-only configuration
- Material feels thin
| Specification | Details |
|---|---|
| Dimensions | 11 x 9 ft (132 x 108 inches) |
| Weight | 16 ounces (1 pound) |
| Material | 100% waterproof polyester |
| Color Options | Blue, Green, Orange, Gray |
| Included | Stuff sack, 4 guy lines, 2 aluminum stakes |
| Rating | 4.6/5 stars (841 reviews) |
The 11×9 foot footprint provides solid coverage for double hammocks, though I found it slightly more compact than premium tarps like the ENO ProFly.
At just one pound, the weight is competitive for the price point. When I packed it for a three-day trip, it disappeared in my pack alongside other essentials.
The polyester material features reinforced attachment points at each corner. These are critical stress points that often fail on cheaper tarps, so I paid close attention during testing.
Customer photos confirm the reinforced stitching at attachment points holds up well under tension, which is the most common failure point for budget tarps.
The included guy lines feature reflective tracers woven into the cord. I noticed these immediately during a midnight bathroom trip at camp.
Unlike some premium options that come with comprehensive stake kits, Bear Butt includes only two aluminum stakes. For diamond configuration, you’ll want to supplement with your own.
Waterproof Performance and Weather Protection 2026
Yes, the Bear Butt Rain Fly keeps you dry in rain through its waterproof polyester construction and proper diamond configuration setup.
During my testing, I experienced everything from light drizzle to a three-hour thunderstorm with heavy wind-driven rain.
The polyester material shed water effectively. I watched droplets bead up and roll off rather than soaking through, which is exactly what you want in a rain fly.
Waterproof performance comes from the material’s tight weave and factory-applied coating. The proprietary polyester resists water penetration better than untreated nylon alternatives.
One concern with budget tarps is seam leakage. I ran water directly over the seams during a backyard test and found no penetration points.
Wind protection deserves mention. The diamond configuration creates an aerodynamic shape that sheds wind effectively, though very high winds from the side can push rain underneath.
✅ Pro Tip: For maximum weather protection, angle your rain fly with the lower edge toward prevailing winds. This prevents rain from blowing underneath and keeps the entry area more sheltered.
Real customer images show the tarp performing well in various weather conditions, validating the waterproofing claims from actual users rather than marketing materials.
I did experience minor condensation buildup on extremely still nights. This is normal for any rain fly and doesn’t indicate a product defect.
How to Set Up the Bear Butt Rain Fly In 2026?
To set up a Bear Butt rain fly, attach the corners to your hammock suspension using a diamond configuration, tension the guy lines, and stake out the sides for optimal coverage.
Quick Summary: The diamond configuration creates a diamond shape overhead when viewed from above, with two attachment points on each tree. This setup provides excellent coverage while using minimal hardware.
- Attach to Trees: Loop the rain fly corners over your tree straps or suspension system at head height and foot height on each tree.
- Create Ridge Line: Ensure the fly creates a peaked ridge line between the two trees, centered directly over your hammock.
- Stake Corners: Use the included aluminum stakes (or your own) to stake out the two remaining corners, pulling them away from the hammock for tension.
- Adjust Height: Position the rain fly 12-18 inches above your hammock for adequate clearance without sacrificing coverage.
- Tension Guy Lines: Adjust the guy lines until the fabric is taut without being overly stretched, which prevents sagging during rain.
- Test Coverage: Lay in your hammock and verify you’re protected from rain angles from all directions.
⏰ Time Saver: Practice setup in your backyard before your first trip. I learned this the hard way after fumbling with knots for 20 minutes in fading light.
Diamond Configuration Tips
The diamond shape means two attachment points on each tree. One higher (near your head) and one lower (near your feet).
This asymmetric setup creates better coverage where you need it most—around your torso and head while lying diagonally in the hammock.
For windy conditions, I rotate the diamond so the lower edge faces the wind direction. This creates a windbreak effect.
Real-World Performance
I’ve used the Bear Butt Rain Fly for approximately 45 nights across various conditions from mild summer evenings to autumn rain storms.
The most telling test came during a surprise thunderstorm in Olympic National Park. Rain fell sideways for nearly three hours while winds gusted to 25 mph.
I stayed completely dry. Not a single drop penetrated the tarp, and I slept soundly despite the chaos outside my hammock.
Forum users on Hammock Forums and Reddit report similar experiences, with many mentioning multiple seasons of use without failure.
One common theme from long-term users is the tarp’s surprising durability given the price point. Multiple reviewers mention using their Bear Butt rain fly for 2-3 years without issues.
⚠️ Important: The included stakes are adequate for soft soil but may bend in rocky terrain. Consider upgrading to titanium or heavier aluminum stakes for harsh conditions.
Customer photos consistently show the tarp holding up well after extended use, with few reports of seam failure or material degradation.
Whether you are enjoying drinks in your hammock on a lazy afternoon or weathering a storm, this rain fly provides dependable protection.
Pros and Cons 2026
After extensive testing and analyzing hundreds of customer reviews, here is an honest assessment of strengths and limitations.
What I Like
- Waterproof Performance: The polyester material genuinely sheds water and kept me dry in heavy rain.
- Ultralight Design: At just one pound, it disappears in your pack and won’t weigh you down on long treks.
- Easy Setup: The simple design means fewer attachment points to fuss with compared to complex modular tarps.
- Reflective Features: Guy lines include reflective material that prevents tripping at night.
- Incredible Value: At roughly one-third the price of premium options, the performance-to-price ratio is outstanding.
- Pack Size: Compresses smaller than a Nalgene bottle, leaving room for other gear.
- Lifetime Warranty: Bear Butt stands behind their products with a solid warranty policy.
What Could Be Better
- Limited Configuration: Only works in diamond shape with no extra grommets for A-frame or porch modes.
- Two Stakes Only: You will need to purchase additional stakes for optimal setup.
- Thin Material: The polyester feels thin compared to premium options, raising questions about very long-term durability.
- Size Limitations: At 11×9 feet, it provides less coverage than larger tarps in extreme weather.
- No Sealed Seams: While my testing showed no leaks, factory seam sealing would provide extra peace of mind.
How Does It Compare?
Compared to premium options like the ENO ProFly ($80-100) or Kelty Noah’s Tarp ($60-80), the Bear Butt offers 70-80% of the performance at 30% of the cost.
The ENO provides more coverage area and additional attachment points for varied configurations. For most users, these advantages matter less than the price difference.
Kelty’s Noah’s Tarp uses slightly heavier-duty material but weighs more. If weight is your primary concern, the Bear Butt actually wins here.
Wise Owl Outfitters offers a similar budget option. The Bear Butt distinguishes itself with better reflective features and consistently positive customer service reputation.
Who Should Buy?
Beginner hammock campers will find the Bear Butt Rain Fly an excellent entry point without breaking the bank.
Budget-conscious hikers who need reliable protection without premium pricing will appreciate the value proposition.
Backpackers counting every ounce will benefit from the sub-one-pound weight that rivals more expensive options.
Who Should Avoid?
Extreme weather campers facing heavy snow or hurricane-force rains may want a more robust tarp with additional tie-out points.
Those who prefer modular setups with multiple configuration options will find the diamond-only design limiting.
If you demand the absolute best materials and construction regardless of price, premium tarps from Kammok or Warbonnet may better suit your needs.
Final Verdict
The Bear Butt Rain Fly delivers on its promise of reliable waterproof protection at an unbeatable price point.
After 45 nights of testing and analyzing hundreds of user reviews, I am confident this tarp provides excellent value for anyone starting their hammock camping journey.
Whether you are planning hydration for outdoor adventures or full camping setups, this rain fly deserves serious consideration.
For beginners and budget-conscious campers, the Bear Butt Rain Fly is an easy recommendation. It does the job well without demanding the premium price of big-name alternatives.
Frequently Asked Questions
Is a rainfly worth it?
Yes, a rainfly is absolutely worth it for hammock camping because it provides essential weather protection that allows you to camp comfortably in rain and wind. Without a rainfly, a single rainstorm can end your trip early or result in a miserable wet night. The Bear Butt Rain Fly costs less than most emergency bivies while providing reliable shelter season after season.
Are hammocks ok in the rain?
Hammocks are perfectly fine in the rain when equipped with a proper rainfly. In fact, hammocks can outperform tents in rainy conditions because you are elevated above wet ground and potential runoff. The key is proper rainfly setup with adequate coverage and pitch angle to shed water effectively.
Is a hammock underquilt worth it?
A hammock underquilt is worth it if you camp in temperatures below 60 degrees because sleeping bags compress underneath you and lose insulation value. The Bear Butt Rain Fly works alongside an underquilt to create a complete sleep system, with the tarp blocking wind and rain from above while the underquilt provides insulation from below.
How do you set up a Bear Butt rain fly?
Set up your Bear Butt rain fly by attaching two corners to each tree in a diamond configuration, creating a peaked ridgeline over your hammock. Stake out the remaining corners, adjust the height 12-18 inches above your hammock, and tension the guy lines until the fabric is taut. Practice setup at home before your first trip to familiarize yourself with the process.
