PVC Fits most 1-1/8 inch (28.6mm) bicycle top tube such as road bike, mountain bike, BMX bike, folding bike, etc Made of high-quality PVC material, durable and not easy to break Small and light, easy to install and remove, does not affect the appearance of the bicycle, and can be removed when not in use It can effectively protect the top tube of the bicycle from scratches and wear, and has a certain slip resistance Can be softened by heating with a hairdryer or by immersing in hot water, and then adjusted to fit the shape of the top tube of the bicycle to better protect the top tube