The SOL Escape Lite Bivvy is constructed with our proprietary Escape fabric and with a minimalist design the Escape Lite weighs in at only 5.5 oz and packs incredibly small. The proprietary fabric lets moisture escape at the same time that it keeps rain snow and wind on the outside all while reflecting your body heat back to you. The Escape Lite can be used as a liner to enhance the warmth of your traditional sleeping bag as an ultra-light weight summer bag or as an emergency bivvy.