Product name:bicycle inner tubeProduct color: As shown in the figureProduct material:TPUproduct features:1. TPU material: The inner tube is made of TPU material, which is 70% than ordinary inner tubes. It can significantly reduce the weight of the bicycle and make riding easier. Please note that do not fill more than 10% of the gas before installing it into the wheel, otherwise it will not work properly. The inner tube should be inflated to about 5% and inserted into the bicycle tire before inflating.2. High-end quality: The inner tube is explosion-proof and puncture-proof, which can effectively avoid sudden tire blowout during riding and ensure your safety and smooth trip.3. Strong compatibility: Suitable for 20-29in mountain bikes, whether it is daily riding or mountain crossing, it can easily handle it.4. Good durability: After many tests and verifications, the inner tube has good durability and can reduce the cost and frequency of bicycle maintenance.5. Excellent comfort: The inner tube has a flexible texture and excellent shock absorption performance during riding. It can easily cope with various terrains and road conditions, providing you with an excellent riding experience.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:1pc bicycle inner tube