Outdoor Research Alpine AscentShell Bivy WH Mesh-covered ridged foam AirScape backpanel

Mesh-covered ridged foam AirScape backpanel allows maximum ventilation while keeping the load close to the body

A bike-specific

•Waterproof and air-permeable eVent® fabric base allows air to be pushed out but water can't get in

•External webbing offers many lash points

Outdoor Research Alpine AscentShell Bivy WH Mesh-covered ridged foam AirScape backpanel"Less is more" doesn't always ring true, but the Alpine AscentShell Bivy packs as much as possible into a small alpine shelter. On our lightest ascents into the wilderness, this bivy offers serious protection in all four seasons. Outdoor Research's Helium AscentShell membrane keeps us secure in unruly weather, and it boasts breathability that ensures our outdoor comfort during the hotter months as well. Details: Four season bivy for alpinism and solo