14 Vents Compliance: CPSC Bicycle Integrated MIPS (Multi-Directional Impact Protection System) - MIPS Is Designed To Reduce Rotational Forces That Can Result From Certain Impacts. By Integrating The MIPS Slip Plane Into The Fit System Fusion In-Mold Polycarbonate Shell - A Process Pioneered By Bell Bonds The Helmet's Outer Shell To The EPS Foam Liner To Create A Sturdier Helmet. Ergo Fit - Sleek, Easy-To-Use Dial System For One-Handed Adjustments (Integrated With MIPS Layer) No-Twist Tri-Glides: Quick-Adjust Fasteners That Help Keep Straps Flat And Properly Positioned Sweat Guide Pad Design Pulls Moisture Away From The Brow Pad And Away From Eyewear