Product size about : 700x18-32C/36g/sv Product color: As shown in the figure Product material:rubber product features: TPU tube: the latest technological advancement in bicycle inner tubes - the fastest rolling speed, the most Sturdy, and the lightest weight. It also seems to be more sustainable because it requires less materials and is easy to recycle. High strength: It is Sturdy and wear-resistant, which can extend its service life in various road conditions. Fastest speed: Compared with butyl rubber and latex inner tubes, it has better rolling resistance, bringing a faster and more exciting riding experience. Safe and not easy to burst: The special new TPU material has excellent puncture resistance. Seamless structure, mold vulcanization, ensure uniform roundness, and bring a smooth riding and handling experience. Good air tightness: The bicycle inner tube is equipped with a high air tightness 42mm/45mm/65mm/85mm height French valve, which will not leak and can be used for half a year after one inflation. Please note! ! ! This inner tube cannot be over-inflated when it is not installed on the outer tube, otherwise it will cause irreversible damage! Please use a manual air pump instead of high-speed inflation equipment such as air compressors or pumps. Before inflating your RideNow inner tube, turn the nozzle inward (toward the center of the tire). Inflate slightly until the inner tube is round; this pressure should be less than 0.5 bar/8 PSI. If the empty tire pressure exceeds 6PSI, the inner tube will expand beyond repair! Please follow the product manual for detailed installation Precautions: 1. As we all know , the different computers display colors differently, the color of the actual item may vary slightly from the following images. 2. If you feel difficult to choose the size, you can contact us at any time. We will give you some suggestions, but for your reference only. Shipment includes: 1 pc Ultralight Bike Inner Tube