The Source (TM) Mips (R) helmet combines advanced performance and protection in a rugged, trail-ready design. Featuring deep coverage with aggressive ventilation from 16 vents coupled with deep internal channeling, it helps keep things cool even when the riding gets rowdy. And with the comfort and secure feel of the Roc Loc 5 fit system with Integrated Mips (R) brain protection, plus a moto-style adjustable screw-in visor and full lower Hardbody (TM) durability, you get a helmet that's capably equipped for fun and adventure. Giro Source MIPS Bike Helmet | Black | Large | Christy Sports