To use, simply insert the foam pad into your helmet's interior, ensuring it aligns with the existing structure. The replaceable design allows for easy maintenance, letting you swap out worn pads effortlessly. Its breathable material ensures consistent ventilation, keeping you cool and comfortable during intense activities. Features -Color:Grey -Material:Sponge -Size:34.00X3.00X0.50cm/13.36X1.18X0.20in -Size:16.50X11.00X0.50cm/6.48X4.32X0.20in -Size:7.50X6.50X0.50cm/2.95X2.55X0.20in -Sweat management: effectively absorbs and evaporates sweat, keeping your head dry and enhancing overall riding comfort -design: detachable liner allows for cleaning, ensuring a helmet interior -Shock absorption: highdensity sponge material provides excellent cushioning to reduce impact and improve safety during rides -Adaptable fit: universal sizing ensures compatibility with a wide range of helmets, making it suitable for various riding activities -Ventilated comfort: breathable construction promotes airflow, reducing heat buildup and ensuring comfort in warm weather conditions Package list: 3 x sets Helmet Liner Pads