Soft teeth design brings buffer function to protect your head when bumping, massaging your head skin and keeping your hairstyle. Silicone material makes it not easy to deform. Hollow design makes it breathable to reduce sweating and odor. Integrated design makes it easy to install by pressing without tools. It is constructed of silicone material. The diameter of the product is 20cm. It is suitable for bicycle helmets. Item Name: Protective Pad Material: Silicone Features: Shock Absorption, Teeth Design, Anti-collision Size Details: Diameter: 20cm/7.88" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Protective Pad