18 Vents Overbrow Ventilation Features Intake Ports On The Brow Of The Helmet To Usher In Cool Air And Push It Through The Air-Channel Matrix For Full-Head Ventilation Compliance: CPSC Bicycle MIPS®-Equipped - MIPS Stands For Multi-Directional Impact Protection System, Which Is A Leading Slip-Plane Technology Inside The Helmet Designed To Reduce Rotational Forces That Can Result From Certain Impacts. Progressive Layering: The Process Of Engineering A Helmet Liner With Variable EPS Foam Densities To Better Manage The Transfer Of Energies After Some Impacts 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. Float Fit Race - A State-Of-The-Art Lightweight Fit System Featuring Seamless Integration With MIPS, An Easy-To-Turn Dial, Wide-Range Vertical Adjustment And Padded Width-Adjustable Cradles No-Twist Tri-Glides: Quick-Adjust Fasteners That Help Keep Straps Flat And Properly Positioned Lightweight Straps Sweat Guide Pad Design Pulls Moisture Away From The Brow Pad And Away From Eyewear X-Static Padding - Quick-Drying Materials, Woven With Real Silver Fibers, Inhibit Growth Of Odor-Causing Bacteria And Fungi Weight: 305 Grams (Size M)