Features: The Helmets lining not only protects skin, but also keep sweat away from the skin. A comfortable feeling is guaranteed. Make of cool fabric, it will not slip or interfere with the Helmets. As soon as you wear, you will feel cool and it is perfect for wearing under a Helmets and safe Helmets. Suitable for head circumferences of 52-60cm/20.47-23.62inch, it is breathable and elastics, without feeling compression, providing you with a comfortable experience. Both men and women can wear a Helmets lining for different activity indoors or outdoors. Protect your head from light. Suitable for motorcycles, cycling, walking, hiking, running, exercising, gym, tennis, basketball, and other sports. Specifications: Materials: Ice Silk Color: Black/Blue/Green/Purpleness Head Circumferences: 52-60cm/20.47-23.62inch Package Includes: 1pc Helmets Liner note: Please allow 1-2cm errors due to manual measurement, make surely that you not mind before order. Due to difference between different monitors, the picture may not reflect the actual color.