UCO Windproof and Waterproof Survival Matches with Sealed Case and 2 Strikers - 15 Matches Sealed case contains 15 compact windproof and waterproof matches and 2 strikers. Matches are easy to light and will relight after being submerged in water! Up to 12 second burn time. Integrated, replaceable striker for easy lightingincludes 2 strikers. Weight (Kit): 0.5 oz. (15 g)