Fully taped seams prevent leaks and water from seeping through, keeping gear dry
Reusable and durable design eliminates the need for multiple trash bags, reducing waste
Hand-built construction ensures long-term reliability and strength
Lightweight and compact for easy packing and transport
Made in the USA from high-performance Challenge D50T fabric for trusted quality
Summarized by Shop
The waterproof upgrade your expensive sleeping bag/quilt deserves
Most backpackers use a trash compactor bag or nylofume bags to keep their gear dry. It works… until it doesn't. Trash bags or other thin plastic bags rip and tear over time, leak after a few weeks, fall apart in your pack, and turn into trash you have to pack out.
Our Ultr
Weight
2.5–3 oz (varies by size)
Material
Challenge D50T fabric
Closure
Roll-top with clip
Sizes
Small (16–25 in, 2.8 oz for 20–33 L packs), Medium (18–25 in, 3.25 oz for 35–50 L packs), Large (21–35 in, 3.85 oz for 50–70 L packs)
Weatherproofness
Decent until torn
Warranty
5 years (repair if needed)
Summarized by Shop
4.9
35 ratings
5
4
3
2
1
I can fit my whole loaded pack inside the liner for airplane travel and then use it as my pack liner. It’s great!
P
Philip · August 12, 2026
Everything i wanted, will try out the pack liner this weekend.
David · 12 days ago
Perfect!
Well-made, sturdy, lightweight, and the perfect size for a Kakwa 55. Happy to support this small business, made in the USA.