Outdoormaster Bike Helmet For Adults,Adjustable Cycling Helmet For Men And Women Fit System - This bike helmets for adults are suitable for head circumference of 55-61cm/21.65-24.01inch, the round adjustment at the back and the chin strap of the helmet can easily adjust the bicycle helmet to the right size. The recommended Age Grading: 5 Years and Older Certified Quality Professional Head Protection - The helmet's strong and durable outer shell is made of PVC and ABS materials, while the inner EPS foam provides impact protection and makes the helmet shockproof and fall-resistant. Cool and Comfortable - This adult bicycle helmet has 10 vents for optimal airflow, and the interior is designed to be removable, washable, and quick-drying. The interior pads are removable, washable, and quick-drying. Additionally, the helmet comes with a built-in visor to block the sun while you ride, making it unnecessary to wear sun glasses. Multi-Occassion - This Retro Urban leisure style adult bicycle helmet is perfect for a variety of outdoor activities, including commuting, skateboarding, skating, scootering, longboarding, and road-biking. The OutdoorMaster helmet's classic design will complement any ride. What You Get - You'll receive an OutdoorMaster bicycle helmet, along with our dedicated customer service. If you have any questions or encounter any issues with your helmet, please don't hesitate to contact us. We're here to help.