The Assault Bivy is for when every gram counts and rest rather than deep, sound sleep is all that's on offer. It features FUTURELIGHT™, our advanced breathable-waterproof fabric technology. The square-cut bag is designed specifically to accommodate boots and a pack for when space is tight and rest is an urgent necessity. The internal carbon fibre poles mean you won't feel claustrophobic when inside the bag. And the two-way zip allows venting from the top of the bivy. It's a surprisingly livable shelter.