Bicycle Helmet Men Specialized Mtb Road Racing Safety Riding Cycling Double Layered Helmet Woman Outdoor Sports Ride Bike Helmet show details 1: Brand: COLNELS 2: Model:QC-68 3 :Size L(58-62) CM 4 :Air vents16 5 : Suitable for road bikes, unisex 6: Inner pad: washable comfort pad, chin pad. 7: Material: PC, Inner: EPS, Foam+Nylon Adjustment Band Outer: Safer and more perfect. 8: Adjustment system: 360-degree adjustable size, easy to rotate with one hand. Our Services and Feedback 1: About the color: The picture is taken in kind, without special treatment. However, color and brightness may vary slightly due to different computer monitors or other factors. 2: About size: Please allow 1-3cm difference due to manual measurement and different batches of products. Please forgive me. Make sure you don't mind before bidding. 3: Become our fan, you will enjoy our preferential discounts, collections and additional purchases. 4: If you are satisfied with our products and services, please leave your praise and 5 stars, 5 stars constitute a detailed rating of your order. Once you show us a screenshot of these two 5 stars, we will offer a discount on your next order. 5: If you are not satisfied with our products, please contact us before leaving neutral (3 stars) or negative (1-2 stars) feedback. We guarantee 100% to solve any problem for you. 6: About the logistics time: We cannot control the arrival time because it is handled by a third-party service. However, if the package does not arrive within your estimated time, please contact us immediately and we will help you track the package and give you a satisfactory answer. 7: If you have any questions about our products, please contact us directly