The Escape Pro Bivvy evolutionary material provides dry, warm comfort you can trust. Engineered to be breathable, waterproof and heat reflective, the Escape Pro allows condensation to escape while keeping the elements locked out and the heat in. As humidity in the bivvy increases, the bivvy becomes more breathable and maintains its waterproofness. Use it as a protective barrier for your sleeping bag and add 15 707708012327 31032300006 0140-1232