Four seasons mountain bike cross-country motorcycle helmet DH the CQR am of small hill rushed downhill cross-country helmet

Shell: mouth high quality ABS SHELL, and resistance to penetrate, impact resistance

Buffer layer: Japan water brand high-density foam Lined

Size:S(52-55cm),M(55-56cm),L(57-58cm),XL(59-60cm) WEIGHT: 950G 50g