Slime Extra Strong Self-Sealing Bicycle Tube Schrader 20" x 1.25-2.125" Bike Inner Tube - 30049

These are no ordinary bicycle tubes! These extra strong inner tubes stop flats for 2 years because there is Slime inside. No more flats for 2 years! Extra strong because there's Slime inside. Instantly seals tread area punctures up to 1/8" (3mm) in size Seals multiple punctures repeatedly Non-toxic and non-flammable Cleans up with water Tube sizes and valve types available for nearly every type of bike. Works in bicycles . wheelbarrows . wheelchairs . jogging strollers . snow blowers and much more. Stop flats for 2 years!