Buy survival bags and bivi bags online from BCH Camping UK. We have survival bags from Lifesystems and Highlander and Bivi bags from Terra Nova. Plastic survival bags from Highlander are ideal for low level day hikes, or Ten Tors or Duke of Edinburgh Awards. If you are off somewhere more extreme, then the lifesystems thremal bag or Thermal blanket are a more sensible choice. The blanket is designed for when you are in a situtation where you can't walk, or need to wait for help, but need to stay warm. The reflective material keeps your body warm and dry. The blanket is ideal for mountain marathons. The Terra Nova Bivi bags are waterproof, breathable bags that you put your sleeping bag into, perfect for a night under the stars.