The ultra-light, ultra-warm full protection 2-person shelter! The SOL 2-Person Emergency Bivvy is made from the same heat-reflective polyethylene as AMK's world-famous emergency blankets (reflecting 90% of your body heat back to you), with the added benefit of being fully sealed so that no wind, rain, or snow can get inside. If you and your partner are forced to spend the unexpected night outdoors, both of you can hop in the SOL 2-Person Emergency Bivvy as soon as the temperature drops and instantly improve the odds in your favor.