Wafo Extra Long One Man Water and Windproof Breathable Bivy Sack Survival Sleeping Bag German Design Reflective water proof polyurethane coating, heat taped seams 5000mm water resistance This sack is not a one time use survival bag but is built for repeated use weighs 14.1 ounces, dimensions:260 x 75 cm Zipper 1/2 way down bag with storm flap.. flap seals with unique full length velcro strip