Description: 【Product Specifications】: The Bike Inner Tubes is the most extensive size on the market at present, compatible with 700C 18 to 32 inch tires. 【High Quality】: Ultralight Bicycle Inner Tube is made of high quality thermoplastic polyurethane, which has good sealing performance, is ultra light, and has the characteristics of anti aging and shock absorption. 【Durable and Comfortable】: 700C Road Bike Tubes is more durable, can withstand the toughest terrain, and is resistant to punctures and tears. 【Easy to install】: Durable Bike Interior Tire Tubeinstallation operation is very simple and fast, saving time and effort, and the old tube can be replaced in a few minutes. 【Important Reminder】: For changing bicycle inner tubes, you need to add a little air before installation. Can shape it so it doesn't twist into a ball and cause it to flatten. Finally, check whether the inner ring of the tire is even.   Size Chart: Suitable for 700C 18-32 inch tires Package Includes: 1 Bike Inner Tubes(3 Pack) Note: Please allow slightly errors due to manual measurement and different monitors.