Detailed description:
Helmet Size: ML is suitable for head circumference of 57-61cm, and can be worn with 61cm, maybe a little tight, depending on the user's head shape.
Helmet weight: 941g (including a full set of sponge pads, excluding the 4 additional adapter blocks).
Helmet shell thickness: 7mm
Helmet shell material: ABS plastic.
Cuttlefish: aluminum alloy material
Guide rail: ABS plastic
Chin strap: 1.5cm wide thickened polyester ribbon.
Fastener: nylon fastener, very durable, low temperature resistant, not easy to aging, fracture and deformation.
Sponge liner: fully known as polymer material modular damping system, half an inch thick.
Hanging rope: elastic rubber band
Lining: EPP anti-seismic foam
Suspension: OPS adjustable suspension system