BCB Emergency Sleeping Bag. NATO Stock Number (NSN): 8465-99-138-3533. Medium 160 gauge full size clear/transparent polythene sleeping bag. 210 cm x 90 cm. Vacuum packed in foil pouch. Packed size 13.5 cm x 6.5 cm x 2.5 cm. Weight 140 g. Wind/waterproof shelter that can be used as either a survival bag or shelter sheet. Other uses: waterproof equipment bag, water procurement, floatation aid, insulation from ground conduction when filled with leaves, source of polythene and foil for general purpose use. Made by BCB International, Wales, UK.