Lazer Z1 Road Bike Helmet Think about your current helmet; now imagine it lighter, with a more comfortable Fit System, better ventilation, an additional (optional) aeroshell and improved side impact protection. That's what the Lazer Z1 has to offer. Building on its long tradition of innovation, Lazer decided to combine all the elements of a high-performance helmet and develop every feature to the max. It is the lightest helmet Lazer has ever made, without compromising style, safety and comfort. With the looks of a contemporary, high-performance road helmet with an integrated wing on top. You can also attach an LED light to the helmet so you always have visibility and are visible in the dark. Specifications: Gender: unisex Color: yellow Material: EPS foam Type of bike: racing bike Certification: CE-CPSC-AS Fit system: ARS Advanced Rollsys® system Construction: In-Mold Ventilation: 31 vents Weight: 210 grams Head circumference: 52 - 56 cm Size: S