1. the strap is nylon cloth, which has good tensile strength and will give comfortable feeling to the skin. 2. The fasteners a

1. the strap is nylon cloth, which has good tensile strength and will give  comfortable feeling to the skin.

2. The fasteners are POM plastic steel.

3. The stickup fastener has good efficiency in the temperature between   -15 to 70.

4. The pads are sponge and velvet that stick togeter, which has beautiful appearance and comfortable wearing for the head.

bicycle helmet