Be prepared for emergency situations with lightweight emergency blankets designed to provide life-saving warmth in bad weather while maintaining their durability. Mylar blankets, also known as space blankets or emergency blankets, are lightweight, low-bulk blankets made of heat-reflective thin plastic metal-like sheeting. They can help hikers and trauma victims ward off hypothermia by being waterproof and windproof, which prevents precipitation from drenching you and gusts from stripping warmth from your skin. They also trap radiated body heat due to their reflective nature. These blankets are made from the same material originally developed for the Apollo Space Program to protect sensitive equipment from harmful radiation. Lightning X LXEFB disposable rescue blankets keep in body heat & preserves body temperature. A must-have for any first aid or trauma kit! Lightning X Emergency Blankets have a miriad of uses. Primary uses include heat blanket, sleeping bag, heat reflector, waterproofing, insulation, windbreaker, emergency signaling device, water storage and many many more. Its' ultra compact design makes it easy to carry in a first aid kit, purse or even your pocket. Each blanket is individually packed in a zip lock bag until it's ready for use. Pack of 10 blankets, each measuring 52" x 82", latex free & disposable.