CLOSEOUTS . Grab Bell's 2005 Phi cycling helmet and let Bell Sports' commitment to racing, quality and innovation go right to your head. Comfortable, stylish and reliable helmet offers a GPS (Geared Positioning System) for adjusting on the fly. Fusion in-mold microshell (foam bonded to helmet body) Bottom-wrap for ding prevention Adjustable chin straps 28 vents for extra cooling Weight: 11.4 oz. CLOSEOUTS . China. Size ( cm /inches): S ( 53 to 55cm /20-¼ to 22") M ( 56 to 58cm /22-3/8 to 23-1/8") L ( 59 to 61cm /23-½ to 24-¼") See our Cycling Gear Guide