No more flats with Slime tube sealant. Slime Inner Tube Sealant is a great investment that prolongs the life of your bicycle tires. Smart Tubes instantly seek out and seal punctures as they occur, for up to two years. No more worries as you venture out on your bike. The Slime Tubeless Ready Kit is your all in one tubeless maintenance kit providing the best products in one package. Slime is designed to get you back on the trail much faster than changing a tube.