Description: 【Quality Inner Tubes】: These TPU Road Bike Ultralight Inner Tubes is made of TPU, ensuring durability. Significantly lighter and more compact. This makes them easy to carry and store, while maintaining great performance in both high and low temperature environments 【Enhanced Riding Efficiency】: These Bicycle Inner Tubes improve response and handling performance. This is particularly beneficial during climbs and sprints 【Anti Puncture】: TPU Bike Tubes offer Anti Puncture, complemented by a seamless design that minimizes air leakage risks. With only a single joint around the valve area, these tubes provide reliable protection even on rough terrains or during long distance rides 【with Seal Protection】: These Bike Interior Tire Tubes boast great air retention capabilities, maintaining stable tire pressure to reduce the need for frequent inflation. The seal structure ensures that even under stress or tension, air leak is minimized, enhancing safe for every ride 【Upgrade Bike Parts】: This ultralight inner tubes not only improves your bike's performance but also contributes to a more enjoyable and efficient cycling experience. It is an ideal upgrade for your road bike Size Chart:Valve 4.5cm/1.77inch Package Includes: 2 inner tubes, 2 tire patches, 2 air nozzle stickers, 2 tyre spoon Note: Please allow slightly errors due to manual measurement and different monitors.