Bright Helmet Rear Light: Our bike helmet with light in the back, it has 3 flashing mode light- steady, slow flashing and fast flashing. It is necessary to equip taillights for night cycling, it will help riders behind you clearly recognize your direction and warning the car. Magnetic Goggles and Visor: Detachable magnetic goggles and removable visor, not only protect your face against wind and sand, but also block the strong sunlight. VICTGOAL Bike Helmet also can use a single sun visor or both visor and goggles. One cycle helmet can fit mountain bikes and road bikes cycling. Safety Protection: High-density imported PC cases with superior technology will surely improve safe performance. Our bicycle helmet with durable hard shell, soft pad can absorb the pressure caused by external impact. Adults wearing bike helmet will feel Safer and more comfortable, it will protect your head in all directions. Cool and Lightweight Helmet: Our bike helmet special aerodynamic designed and 21 breathable air vents, effectively reduce air resistance and sweating. This bike helmet only 310g (0.68 lb) will not cause any burden to the rider's head during cycling. Adjustable Fit: VICTGOAL bike helmet fits for adult men and women, you can adjust the helmet size easily with one hand, 3 sizes available, size M: 21.3-22.8 inch (54-58 cm); size L: 22.4-24 inch (57-61 cm); size XL: 23.2-24.8 inch (59-63 cm). It is easy to adjust the bicycle helmet size with one hand. Our bicycle helmet will give you a comfortable and happy cycling trip.