This is a highly visible orange emergency sheet for outdoor use. The silver backing is designed to increase heat retention. Unlike regular sheets, this one is tube-shaped, so you don't have to worry about it being blown around by the wind when wrapping yourself in it. When used as a simple tent, you can peel off the black seal and use it as is. A plastic whistle is included in the stuff sack. I bought several for emergencies, but I have some extras, so I'm selling them. Unused. Size: 210cm x 91cm