The HypaGuard Foil Blanket is a mylar covering designed to reflect body heat back towards the wearer to keep them warm.They are ideal as an emergency option to hypothermia or comforting casualties in shock.The mylar construction reflects over 90% of the wearer's body heat.The blankets are folded compactly (10cm x 6cm) individually wrapped in sealable pouches and unfold easily to their full size (210cm x 130cm).The multi-purpose blankets are not limited to first aid uses they can also be used for anything from sporting events to outdoor concerts and gigs.The pack of blankets are supplied in a box for ease of storage.