4" x 5', T-Rex Ferociously Strong Waterproof Tape, Provides Tough Waterproof Adhesion Under Wet & Dry Conditions, Built With R-Flex Technology, Can Stretch Up To 700% Of Its Original Length, Strong Enough To Be Used For General Purpose Indoor Or Outdoor Fixes That Require A Waterproof Seal, Apply It Underwater & Push It Into Cracks & Rough, Dirty Surfaces, Formulated To Withstand Extreme Temperatures From -70Degrees F To 200Degrees F, UV Resistant.