Primacare HB-10 Emergency Foil Mylar Thermal Blanket (Pack of 10), 52" Length x 84" Width Waterproof and weatherproof foil and Mylar emergency thermal blanket for retaining or deflecting heat Mylar insert provides insulation and the foil cover can reflect heat back to the body or deflect heat from the sun Mylar blanket is 52" long and 84" wide 10 Pack of emergency mylar thermal blankets A must have for first aid kits and emergency preparedness