[Product Information]

• Certified ASTM F2040， CPSC and EN1078
• Zip Mold: Patent-pending liquid injected high impact foam fused to a tough polycarbonate shell. Entineered seamless， tapered and thinner. It's ultra-lightweight.
• Sink Fit， Lowest Profile - So your helmet fits around your head - not on top of it. Deep fit for maximum comfort and an ergonomic profile.
• Doesn't look like a spaceship landed on your head
• Fits Head circumference 52-53.5cm or 20 1/2-21 inches