Lighter than Helium. Known for their bikes the Belgians are not to be left out of the accessories market. The Lazer Z1 Helmet is a step above its Helium and Genesis designs with more protection in a lighter design. The shape of the Z1 moves the shell of the helmet down across the temple zone at the sides of your head for added impact protection. This T-Pro design uses Lazer RBS design rigidity brace system to hold the shell together in the event of impact to further increase protection to your noggin. At the same time the front sweeps back up to allow for a full range of vision. More protection has no benefit with a poor fit which is why Lazer uses its Advanced Rollsys Adjustment System to ensure that the helmet wraps your head with equal tension from all sides and culminates in a vertically adjustable cradle at the back of your head. The chin strap is adjustable to provide a secure fit as well as comfort. Designed from in-mold ABS Advanced Rollsys Adjustment system 32 vents 220 grams size Medium Item #LZR000Q Learn more Tech Specs: Shell Material in-mold ABS Ventilation 32 vents Fit Adjustment Advanced Rollsys System adjustable chin strap Certifications CE - CPSC - AS Claimed Weight size Medium 220 g Recommended Use cycling Manufacturer Warranty 2 years Learn more