Outdoor Research bivy-Sacks Helium Bivy

Great! Super light weight and durable! Good for star gazing too!

Great bivy. The bivy works great and the pole is perfect for more air circulation inside. We had to purchase another sleeping pad that fits inside.

Product arrived quickly and worked great on a self support kayak trip in Gunnison Gorge CO

My favorite all-round bivy. Lightweight, compact.

The bivy really feels like it's a good quality, but this was my first time buying a bivy and will be my last time. There's not enough room to reach down and take your socks off, for example, because it's so tight in there. It felt like there was barely enough room to switch from your stomach to your back. I did have a sleeping bag in there, of course, but who wouldn't? I've made up my mind...bivy is not the way to go.

I used this for six nights in Utah in October. Cool nights with a fair amount of dew. Definitely not waterproof, as my bag was wet all night every night. Probably would only recommend for extending the season of older bags used in the summer/ fall where condensation is not as much an issue.

This is worth the price, and fits easily in a backpack. I used it in the rain and I stayed dry.

Worked just fine in the cold desert for a week. It's tight, probably as expected, but it's tight! I'm 6' 175lbs -180lbs most days. What got me was finding myself in an actual unexpected survival situation and the biv did not perform, could have been bad. Long story short, I pulled this bivy out in a hurry one afternoon at the end of a 9 day solo remote expedition. Only two days left but I'd have to make it through that evening first. Unexpected heavy snow and rain socked me in on top of a mesa and I knew I needed to set up shelter quick and prepare for this weather moving in. Popped it up under an old juniper, crawled inside and after much consideration I mananged to get a message through requesting an evacuation from a friend asap. I passed out and five hours later I was awoken to a friend and a couple inches of snow. My bivy was soaked my bag was soaked, socks and pants and everything else was soaked. I'm not entirely experienced in bivouacs but had I not had an evac that evening I still wonder what wouldve happened. Waking up to frostbite in the wee hours? Going into hypothermia in such a deep slumber and then not wake up at all? I guess keep it out of moisture and on fair weather adventures only. I did lightly use weatherproofing, obviously not enough. Not waterproof, and is slim!

一人用キャンプに購入、6月にキャンプで使用しました。 中身はビビィテント本体と樹脂フレームのみ。ペグは付属しません。 このテントの長所は設営の簡単さ、コンパクトさ、軽さです。 設営は樹脂フレームを1か所通すだけ、他社製ペグを頭と足に一箇所ずつ打つだけです。 コンパクトさ、軽さは期待値通りで、1kgを切る軽さとザックへの収まりは良好でした。 使った時気温が高かったので開口し、元々本体に付いている蚊帳のみ閉じて眠りましたがあまり問題なく過ごせました。 強いて言えばベンチレーターがないので開口部を気持ち風上に設営する方がいいかも知れません。 短所は当たり前ですが荷物が入らないことでしょうか。 ザックは外置きしてペグダウンするなりしておくのが良いかと。 結露に関しては自分はまだ体験できていないので何とも言えません。 ただ完成度の高いビビィテントであることには違いありません。 これから使い倒していこうと思います。

There is not three tie down points as pictured, only one on the either side and they are not even on the ends so you can’t get it set up completely right. Also no straps for your mat inside as what’s meant to be in the helium bivy. I’m thinking these may be knock offs or defected from the factory ? I have not used it yet I test the quality. Seems like good quality to the touch and feel and a very good design.

Best bivy

This does the job I bought it for (although I haven't used it in heavy rain yet). I don't normally do reviews but am completing this because I saw a couple that nearly put me off. 1. I definitely received the real Outdoor Research product. Reviews mentioning the number of peg loops may have missed that OR have updated the Helium. Their website now lists two peg loops but the pictures all still seem to have more. 2. People saying it's not as good as a tent are missing the point. This is an ultralight hooped bivy not a tent. It completely encloses me from wind and rain overnight with enough space to read but is small and light enough to fit in a running pack. Any tent I could find weighs twice as much, costs twice as much, depends on trekking poles or all three. I'd have thought most people who are going to spend £200 online on a product like this will have done their research and worked out what they want.

新しいモデルになって通気性が改善された、との製品案内を読んで購入しましたが、結露は想像以上のものでした。2022年4月に山梨県のキャンプ場で使用。昼間の気温が20℃前後、夜間の最低気温は10℃前後、タープをリーントゥで張って、グラウンドシートの上に当該ビビーを設営しましたので、風通しは良好でした。 念の為にシュラフにはシュラフカバーをかけて、ビビーの中にはエアマットを敷いて寝ました。 朝起きて早速結露チェックしたところ、両脇部分はかなりしっとり、足元に至ってはびっしょり。 足元はシュラフカバーの中のシュラフ生地の表面までびっしょり濡れていました。 晴天だったので、すぐに干して乾燥させる事ができましたが、連泊や雨天時には絶望的な結露です。 その他は全く不満のない製品だと思います。また、湿気や昼夜の温度差が少ない時期に使用してみたいと思いますが、日本の気候でそんな環境の時はいつなんでしょうか・・・・。