With 2 tire levers, the fat tire inner tube is used to remove and install bicycle inner tubes to prevent fingers from getting stuck in the tire and without damaging the rim. Butyl rubber, better airtightness, durable and shock-absorbing. No bumps will be felt, the bicycle inner tube increases the comfort of your child's ride. Must have this inner tube as a spare or to repair punctures! Highly durable, not easy to break and deform during use. The inflation port has a protective cap, the gas in the fatbike inner tube is not easy to leak out. Thicker than others you have! Color: black Material: Butyl rubber type: 20X4.0 Package contents: 2 x Bicycle inner tubes 2 x Tire levers Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The allowed measurement error is +/- 1-3 cm.