Relags Ultralite bivvy Dimensions: 213 x 91 cm Weight: 108 g packaging dimensions: approx. diameter 7 cm x 8 cm The Wind And Waterproof foil reflects 90% of body heat. It is stronger than the film a rescue blanket and the bag shape even better for an emergency bivouac.. The Ultralite Bivy should these can be worn in any first aid kit, for those if you want to decisive help showcase your style. Made from ripstop nylon in stuff sack has little extra emergency equipment, such as a small headlamp – in place.