Adventure medical kits sol 2 person emergency bivvy description the same ultra light ultra warm full protection shelter that professionals rely on now sized for 2 people the survive outdoors longer 2 person emergency bivvy is made from the same heat reflective polyethylene as adventure medical kits 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 pa