Slime Tubeless Sealant with fibro-seal technology repairs punctures in tubeless tires up to a quarter-inch thick. Non-flammable and non-toxic this sealant utilizes a unique blend of fibers and clotting agents that seal instantly. Slime works repeatedly -- when a puncture occurs, the escaping air forces Slime with FibroSeal technology in the puncture wound to seal the puncture. This product is virtually mess-free, cleans up with water, and lasts for up to two years.