At just 3.5 ounces, this packable emergency shelter is the lightest bivvy on the market. With its waterproof and tear-resistant aluminum-coated polyethylene and sealed seams, it is able to reflect 90% of body heat, helping you keep warm and safe whenever you need it – whether for an afternoon nap or in the event that you get stuck outdoors overnight. The included stuff sack has a built in tinder cord to help start emergency fires and the bivvy’s built-in emergency whistle ensures that if you do get stuck, it hopefully won’t be for long.

If you’re of a big bigger build or want a bivvy for two people, be sure to compare this bivvy’s 84” x 36” (flat lay) dimensions to the XL model that we also carry.