Bell 4FORTY AIR MIPS S M CPSC/CE Helmets Adult Unisex protective gear, bike helmet, mountainbike MTB Matte White, XL

MIPS EVOLVE PROTECTION: Integrated slip plane technology reduces rotational forces from certain impacts whilst maintaining a lightweight, compact design that fits closer to the head with improved ventilation. FLOAT FIT SYSTEM: Minimalist, lightweight retention system with easy-to-turn rubber overmolded dial for precise adjustments, fully integrated with Mips technology for enhanced comfort and security. FIDLOCK MAGNETIC BUCKLE: Effortless lateral-sliding magnetic closure provides quick, secure fastening and unfastening for convenient one-handed operation and time-saving functionality. VENTILATION AND COMFORT: Generous airflow channels combined with Sweat Guide pad design effectively pulls moisture away from brow and eyewear, whilst No-Twist Tri-Glides keep straps flat and properly positioned. TRAIL-READY DURABILITY: Full hard shell construction with extended rear coverage, adjustable visor, and robust design built to withstand demanding mountain biking conditions across all trail types.