Engineered for performance, the Thousand Chapter Collection integrates utility into your daily riding uniform to always keep you moving forward. Specs Includes a 50 lumen magnetic taillight and multi-use adapter MIPS technology for added protection against concussions Visor in premium finishes to increase your field of vision One-handed magnetic fastener with nylon straps Secret PopLock for securing your bike helmet with your lock Integrated dial fit system for precise adjustments Active Ventilation with 8 vents for internal channeling CPSC and EN 1078 safety certified Lightweight helmet at 360g (S), 370g (M) or 410g (L)