Trek Bontrager Helmet ML size 55-61cm Selling because I purchased another helmet. Please check the photos carefully for scratches, dirt, and minor dents. Product Description Cool and Aerodynamic The Velocis Mips road helmet offers the same performance as the pros, with all-day comfort. This premium cycling helmet is lightweight, slim, and boasts excellent ventilation, allowing you to increase your speed without overheating. This top-of-the-line Asia Fit design was developed from extensive research involving over 2,000 people in six regions. Product Details Mips protection system BOA® Fit System allows for easy one-handed helmet fastening and adjustment Internal channels that circulate air over the head to keep it cool and dry Sunglasses port securely stores sunglasses when not in use and makes them easy to access Includes a removable NeoVisor that provides the benefits of a cycling cap without the bulk