Compare Bivy Sacks Compare Products Compare select up to 5 products to compare Score Product Price 77 Outdoor Research Helium BivyBest Overall Bivy Sack $225 75 Outdoor Research Alpine AscentShell BivyBest for Weather Resistance $299 73 Sierra Designs Backcountry BivyBest Bang for Your Buck $170 68 MSR Pro BivyBest for Ultralight Protection $260 64 Black Diamond Spotlight Bivy $250 60 Rab Alpine Bivi $260 59 Black Diamond Twilight Bivy $190 54 SOL Escape BivvyBest Emergency Bivy on a Shoestring Budget $69 48 Survival Frog Tact Bivvy 2.0 $25 44 Rab Ridge Raider Bivi $400 42 Snugpak Stratosphere $249