Bivvy LiteBreathable, lightweight, compact bivy sack. The Bivy LITE bivy sack is a revolution in the classical emergency shelters we know from before. The material used is breathable, resolving the problem of condensation in traditional bivy sacks. As a result, you will stay both dry and warm. The material used reflects up to 70% of your body heat. This bivy sack represents an unrivaled compromise between lightness and performance. The storage bag made using