Cool and Lightweight Cycling Helmet: bike helmet is design with 24 breathable , can effectively reduce air resistance and make you feel cool when cycling. The cycling helmet only 310g (0.68 lb) will not cause any burden to the 's head during cycling. Impact Resistance: This bicycle helmet is made of high-density PC shell and EPS foam, with durable hard shell and soft pad can the pressure caused by external impact. bike helmet will make you feel comfortable and protect you in all directions Magnetic Helmet Goggles and Visor: This bike helmet with visor and goggles, fits for mountain bike and road bike cycling. You can put the goggles and visor on , not only can protect eyes from sunlight, also can protect your face against the sand and wind. Adjustable Fit: bike helmet fits for adult men and women, you can adjust the helmet size with one hand. For: Cycling Head circumference size:56-61cm Name 1: road bike helmet Name 2: mountain bike helmet Name 3: bike helmet men Name 4: bike helmet light Name 5: bike helmet Name 6: helmet road bike color:Blue Material:PC+EPS size:28.5 x 16cm Package Contents: 1 x bike helmet Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.