This inner tube cannot be inflated a lot when it is not installed in the outer tire, otherwise it will cause irreversible damage! Before installation, please inflate slightly to check for air leakage! When installing, first inflate 0.5PSL, make sure that the inner tube is close to the inner wall of the tire when inflating, and then press and adjust the inner tube. Features: Small size, light weight, good toughness, cost-effective Size : 700 x 18 23 25 28 30 32C Recommended scope of application Weight:38g Valve length French 60mm Material: TPU colour: green Package Contents: 1 x Super Light Bicycle Inner Tube 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 measurement allowed error is +/- 1-3cm.