CE, SGS-approved helmet PC double-in-mold A sleek, aerodynamic design 27 air vents for maximum cooling Adjustable chin straps for added comfort FF-1 ring system Weight: 238g A quick-release strap buckle It offers protection whilst being comfortable to wear Available in 58 to 61cm Available in variable colors Customized designs are welcome Helmet safety tips: Wear the helmet flat atop your head, not tilted back at an angle Make sure the helmet fits snugly and doesn't obstruct your field of vision Make sure the chin strap fits securely and that the buckle stays fastened Packing components: Inner packing: PE bag + color box + carton box or PE bag + head card + carton box With sticker logo + instruction manual With visor Packing style: 6/8, 10 and 12 pieces/carton