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Review Summary
2025-11-15T19:00:00
I had high hopes for this product for a very specific backcountry hike, but I should have tried it out first. I'm 5'11", 250lbs, and have a 58" shoulder girth. This product runs exceptionally small for someone my size. Temps were in the teens overnight and I could hardly zip the bivy to close it. Even after finally getting it closed I felt like I was in a coffin and had to immediately unzip it. I am not claustrophobic but now I have a better understanding on the experience for someone who is. Despite my experience, I would definitely buy another one if it was made big enough to fit someone with my build. Great concept!
drwill816

2025-09-30T20:00:00
I purchased this for ultralite backpacking paired with a Seek Outside DST tarp, also used was a Thermarest neo air wide pad and their parsec 20d bag. First the bivi was very lightweight and easy to setup BUT a pain in the you know what to get in and out of. I am 5'9" 200# athletic build (think jacked crossfit dude) and although I did fit inside the sleep system I was extremely constricted. I toss and turn while I sleep and mostly sleep on my side, that was near impossible due to my broad shoulders. Also the mesh is pretty good at staying off your face but the nylon attaches inside the head liner and swishes all over your face all night LOL. If I were a small very skinny man using a quilt and 1/2" thick pad I would have slept much better but apparently I need a much roomier bivi.
Stevie B.

2025-09-21T20:00:00
I bought this in july and love it for my ultrilight backpacking trips.
dragon

Bluesign approved Pertex Shield Diamond Fuse 2.5L 100% Nylon 30D Ripstop Upper
100% Nylon 40D with TPU lamination floor
Bluesign approved 100% Polyester Mesh
15.8 oz (448g)
196773094725
Great feachers.
By dragon
I bought this in july and love it for my ultrilight backpacking trips.
Advanced Weather Protection for Solo Adventurers
Discover the ultimate lightweight shelter designed for solo adventurers who crave both performance and protection. It's perfect for fastpacking, bikepacking, or setting personal bests on long treks, is built with cutting-edge Pertex Shield Diamond Fuse 2.5L technology for low-profile waterproof and windproof protection. The breathable, fully seam-taped construction ensures a dry and comfortable night's rest, while the no-see-um, bluesign approved polyester mesh provides an unobstructed view of the night sky, even when the bugs are out.
Exceptional Design Features for Comfort
The clamshell opening and two internal fly fasteners make entry and exit effortless, while the high-volume toe end offers extra comfort for your feet. Reflective logos and trims enhance visibility during low-light conditions, ensuring you stay safe on your backcountry retreat. The single-pole system, one guy line loop, and four stake loops provide stability in windy conditions, making it a reliable companion for any solo adventure.
Tailored for Fast and Light Adventures
Designed to move light and fast, it is a protective, breathable cocoon perfect for any solo adventure. Its bluesign approved materials ensure eco-friendly and sustainable production, making it an essential addition to your ultralight backpacking gear. Whether you're logging miles on the trail or seeking a compact shelter for fastpacking and bikepacking, the Helium Bivy delivers unmatched performance and protection.
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