The Helium bivy has been designed to be ultralight but still has a separate insect mesh 'door' and a front pole that gives the whole thing some structure and stops the fabric from laying on your face.
Outdoor Research says:
Made from ultra-lightweight, waterproof and breathable Pertex Shield+, the Helium Bivy is a true minimalist bivy for fast and light solo expeditions. Weighing in at a feathery 18 ounces, and featuring a classic clamshell design and durable 70D nylon floor, this storm-proof shelter is ready for season after season of adventuring.
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Outdoor Research's Helium bivvy is an extremely lightweight shelter that still manages to retain an insect screen and front pole to give you some wriggle room. There's no rear pole so the leg area is just like a conventional bivy bag.
The groundsheet is made from a tougher material than the shell and is 'bathtub style' to ensure good performance even in very wet conditions. The hood can be fastened back to the pole and you can leave the insect door in place, so on drier nights you can keep the condensation down by leaving the hood open. Although another couple of attachment points would have made tying back the hood a neater proposition.
- Reviewed by Ultralight Outdoor Gear
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