Durable & impact-resistant materialWith robust and durable PVC and PC, EPS foam, it absorbs impact and protects the head in the event of a crash All-round breathable and lightweightWith 18 ventilation openings, the women's bicycle helmet allows air to pass through and stays cool. The breathable lightweight material is comfortable to wear. Adjustable head circumference & quick releaseThe bicycle helmets for adults can be used on different head sizes. Both the head circumference and the side straps are adjustable. This bicycle helmet fits both men and women with head circumferences of 22.83-24.01 inches (58-61 cm). The quick-release buckle makes it much easier to put on and take off the helmet. Removable sun visor & linerWith removable sun visor, you can protect your eyes from sun, rain and mud. You can remove it when you don't need it. The inner padding can absorb sweat on the head and contributes to ideal comfort. The pads are removable. You can take them off the padding for washing to ensure your next clean and cool ride. Wide ApplicationSuitable for riding, climbing, skiing, inline skating, skateboarding, etc. Our bicycle helmet is a good choice for you. They are comfortable and safe.