[Name]: Bicycle riding helmet
[Size]: free size, head circumference between 57-63cm, head width 18cm, head length 23cm, with adjuster knob, adjustable head circumference
[Material]: Built-in insect-proof net lining, imported nylon webbing and PP material regulator
【Wind Tunnel】: 22 wind holes
[Name]: Bicycle riding helmet
[Size]: free size, head circumference between 57-63cm, head width 18cm, head length 23cm, with adjuster knob, adjustable head circumference
[Material]: Built-in insect-proof net lining, imported nylon webbing and PP material regulator
【Wind Tunnel】: 22 wind holes