About the Giro Radix MIPS Helmet The Radix™ MIPS® combines rugged style and durability to meet the demands of core trail riders, with the coverage, low weight and ventilation riders need to ride comfortably and confidently, all day. The highly adjustable Roc Loc® 5.5 MIPS system allows you to customize fit/feel for enhanced stability and long-range comfort while providing an added measure of protection from dangerous rotational forces in the event of an impact. The P.O.V.™ visor offers 15 degrees of adjustment, and the tough polycarbonate outer shell is fused permanently to the EPS foam liner using Giro\\\'s In-Mold™ construction process, to enhance durability and ventilation without excess bulk. Key Features > MIPS® (Multi-directional Impact Protection System) technology helps to isolate your head from the most damaging rotational forces in the event of a crash > Extended coverage for back of the head protection, essential for the unpredictable nature of MTB falls > Adjustable P.O.V.™ visor helps shield your eyes from the rain or sun > 25 Wind Tunnel™ vents for a cool and comfortable wearing experience > Cool-fit anti-microbial padding for added comfort and hygiene