Outdoor Research Alpine AscentShell Bivy Size:O/S PU port window cold-crack tested

PU port window cold-crack tested to -60°F/-51°C

steady water pressure

Full mesh upper canopy optimizes ventilation and enables unobstructed views

and PackTowl®inside the 1

Weight [g/m]: 51

Outdoor Research Alpine AscentShell Bivy Size:O/S PU port window cold-crack tested"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