Giro Radix MIPS Helmet Rugged trail performance. All-day comfort. The Giro Radix MIPS is built for core trail riders who want dependable protection, a dialled fit, and enough ventilation to keep things comfortable from the first climb to the last descent. A tough polycarbonate outer shell is permanently fused to the EPS foam liner via In-Mold construction for a durable, lightweight build that won't add unnecessary bulk, and the Hard Shell with Hardbody(TM) lower wrap extends that coverage and durability further down the head. The Roc Loc(R) 5 Mips fit system integrates the Mips slip plane directly into the retention system for one-handed fit adjustment and enhanced rotational protection in one package, while the P. O. V. (TM) visor adjusts through 15 degrees across four indexed positions - three riding positions plus a high setting for goggle storage above the brow. At 300g for size M, it delivers everything you need without anything you don't. Features Integrated Mips(R) Brain Protection System - the Mips slip plane is built directly into the Roc Loc(R) 5 fit system to reduce rotational forces in certain angled impacts without adding bulk or compromising comfort Roc Loc(R) 5 Fit System - one-handed micro-adjustment of fit tension and fore-aft tilt in seconds for a stable, personalized fit throughout the ride Hard Shell with In-Mold Hardbody(TM) lower wrap - a polycarbonate outer shell permanently fused to the EPS liner, with the lower wrap extending coverage and durability to the interior of the helmet P. O. V. (TM) visor - 15 degrees of adjustment across four indexed positions: three riding positions plus a raised goggle storage position above the brow, adjustable with one hand on the move Wind Tunnel(TM) ventilation - active vents work with internal exhaust channels to push cool air over and around the rider's head while forcing heat and stale air out Lightweight at 300g (size M)SPECIFICATIONSWeight300g (Size M)Fit System Roc Loc(R) 5 with Integrated Mips(R)Shell Construction Hard Shell with In-Mold Hardbody(TM) Lower Wrap MIPSIntegrated Mips(R)Safety Certifications CE EN 1078Material Composition43% EPS, 23% PC, 21% Nylon, 6% Polyester, 3% POM, 3% PU, 1% Silicone Intended Use Trail, All-Mountain Sizing Size Small Medium Large XLHead Circumference (in)20. 1 - 21. 7"21. 7 - 23. 2"23. 2 - 24. 8"24. 8 - 25. 6"Head Circumference (cm)51 - 55cm55 - 59cm59 - 63cm63 - 65cm | Giro | Radix Mips Helmet Men's | Size Small In Matte Motion Green | Nylon