The ARVA Emergency Blanket UL 55g is an ultralight and highly compact emergency blanket for ski tours, freeride adventures and other outdoor activities. In an emergency, it can help reduce heat loss, with the silver side reflecting up to 90% of body heat. For warmth, place the silver side towards the body while the red outer side absorbs solar radiation. In hot conditions, the silver side can face outward to reflect sunlight. Weighing just 55 g, the blanket packs down small enough to fit easily into almost any backpack. Do not use during thunderstorms or near glowing or hot materials.