BIKE HELMET WITH LIGHTAdult bike helmet come with USB rechargeable LED tail lights design, three lighting modes for you to choose: Normal mode, flash mode,slow flash mode, When driving on the city streets at night or early morning, it will provide you best possible protection and visibility, will also help people behind you to clearlyidentify your directionCYCLING HELMET WITH 8 VENT: The road cycling bicycle helmet with 8 integrated flow vents, According to the ventilation and aerodynamic design, the position of the air outlets isreasonably arranged. When riding in summer, it can keep the air flowing and provide cold airflow, which is designed to reduce air resistance and head temperature. The soft washable and removable helmet lining also helps to eliminate sweat and keep your head coolSPECIALIZED BIKE HELMETProfessional mountain outdoor riding helmet mens bike helmet, made of high quality and durable PCPVC shell materialand high-density EPS foam. Can effectively absorb the impact and protect your head in the event of a collision,providing safety for riding. It's also lightweight, only 288 gramsADJUSTABLE WOMEN BIKE SIZE: The back of women bike helmet has rotating dial and adjustable belt, which can be adjusted to a suitable size according to your head and tail, so as to adaptto the head to the greatest extent and obtain a comfortable wearing effect. The quick release clip can fix the helmet in a suitable position to prevent the helmet from slippingoff during riding.Medium size: 21.7-22.8 inches (55-58 cm) Large size: 23.2-24 inches (59-61cm)MULTI SPORT BIKE HELMETMen Women Scooter Adjustable helmet,suit for aged 13 and over,suitable for many sports occasions, such as inline roller skating, cycling, bike,skateboarding, BMX biking, Outdoor or indoor activities. Excellent shock absorption function will not let you down