An evolution of an award-winning design, the Smith Forefront 2 Mips bike helmet is a full-coverage helmet made for all-mountain riders who seek top-notch protection, venting and eyewear integration. FEATURES Mips® safety system features a low-friction layer inside the helmet that allows a multidirectional movement of 10–15 mm on certain angled impacts Mips is intended to help reduce rotational force to the head Integrated skeletal structure creates a roll cage for added strength and impact protection Complete Koroyd® coverage for lightweight, energy-absorbing and ventilated impact protection Internal air channels are combined with 20 optimized vents; open intake and exhaust ports maximize ventilation AirEvac channels promote airflow to prevent fogging of your eyewear 3-position visor rotates high to allow goggles or sunglasses storage Routed goggles strap channel at the back of the helmet helps keep goggles straps in place Ionic+ antimicrobial lining offers sweat-activated odor control; lightweight, low-bulk single-layer webbing VaporFit adjustable fit system Camera and light mount compatible (mounts not included) Certification: CPSC, CE EN 1078 TECH SPECS Best Use Mountain Biking Helmet Style Mountain Bike Helmet Construction In-mold Shell Material Polycarbonate Head Circumference/Sizing S: 20.1-21.7 inches M: 21.7-23.2 inches L: 23.2-24.4 inches Vents 20 Visor/Brim Yes Weight 14 ounces Gender Unisex