LS2 FF817 Challenger II Nitro Helmet - Black / Grey size:M LS2 uses their proprietary Kinetic

LS2 uses their proprietary Kinetic Polymer Alloy (KPA) for the shell

The technical fabric comfort liner includes cheek pads cut from one solid piece of high-quality foam using LS2’s 3D Laser Technology for a perfect fit and no "hot spots"

but it is also well-suited for DIY applications such as greenhouses

and secure fit of your helmet

LS2 FF817 Challenger II Nitro Helmet - Black / Grey size:M LS2 uses their proprietary KineticA high performance touring helmet designed for long rides. Constructed with HPFC, combining lightweight construction with outstanding safety. Featuring excellent peripheral vision and an integrated sun visor. Equipped with Pinlock 120 XLT Max Vision for enhanced safety. SPECIFICATIONS Material: HPFC Weight: 1500 g (50 g) Shape: Long oval Homologation: ECE 22. 06 Sizes (3 shells): 2XSS ML XL3XL SAFETY Emergency Release System Micrometric metal buckle