Adult bicycle helmet with rechargeable USB lightBicycle helmet with thick EPS foam for urban ridingFeatures:-In-mold construction, inner thickened EPS foam and outer hard shells designed to provide fine shock absorption for your head protection and safety. The foam of this bike helmet is thicker than 17mm (0.67in), practical and sturdy, providing stronger protection.-Built-in detachable USB light with 9 lighting modes, it can make cyclists stand out in the dark and increase safety.-The light is waterproof and rainproof and can be fully charged in just 2 hours.-The one-handed dial-operated retention system on the back of the bike helmet allows for easy adjustment and tightens the overall fit on your head. The soft padded chin strap protects your chin from discomfort. 21.65-24.41 inches, take a head measurement to see if it fits.-12 vents on the bike helmet are designed according to the wind tunnel principle. The shape and angle of each ventilation hole are the perfect crystallization of mechanics and aesthetics. They can perfectly move the airflow over the head and bring cool comfort to cyclists.-High performance inner padding, soft, comfortable and moisture wicking. Removable and hand washable. Come with a portable bag, very convenient to carry the bike helmet outside or to the store.+ productFeaturesColor: White, Black, Blue, Pink (optional)Size:M: Item size: 265*200*160mm/10.4*7.9*6.3inL: Item size: 275*210*165mm/10.8*8.3*6.5inItem weight (about):M: 340g / 0.75lbL:380g / 0.84lbPackage size:M: 268*210*160mm/10.6*8.3*6.3inL:276*225*168mm/10.9*8.9*6.6inPackage weight (about):M: 560g / 1.23lbL:600g / 1.32lbPacking List: 1 * Bike HelmetColorsWhiteBlackLighting mode 99Fast chargingYesYesView productView product