CAIRBULL profession helmet adopts durable tough shell with soft liner which could absorb external pressure caused by crash in outdoor activities.
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Features:
The skateboard helmet adopts durable tough shell with soft liner which could absorb external pressure caused by crash in cycling activities.
With removable, protective, sweat absorption lining pad, comfortable to wear and easy to wash.
18 vents design effectively reduce air resistance and sweating.
Rotary internal regulator adjusts the tightness of helmet.
The helmets come with an adjustable strap which make it flexible to fit the size.
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Specification:
Material: EPS PC
Vent qty: 18 vents
Details:

Size(Optional)	_Head_circumference_	Length	Width	__ Height _	_Color(Optional)_
M	54-58cm_/_21.2-22.8in	31cm/12.2in_	21cm/8.2in_	18cm/7.0in	Black/Green/Grey_
L	58-62cm_/_22.8-24.0in	31cm/12.2in	20cm/7.8in	18cm/7.0in	Black/Green/Grey

Package Size: 31 * 21* 18cm / 12.2 * 8.2 * 7.0in
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Package List:
1 * Bike Helmet
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Note: Please allow a little size difference (1-3cm) due to different manual measurement. Thanks!