GoMax Aero Adult Safety Helmet Adjustable Road Cycling Mountain Bike Bicycle Helmet Ultralight Inner Padding Chin Protector and Visor w/Rear LED Tail Light Adjust INNOVATIVE AERODYNAMIC DESIGN - We proudly introduce you our cutting edge helmet, designed to look and feel well on your head, but most important, to provide you maximum protection. All this combo in only 8.8oz (250g). Once you try it you won't believe the how comfortable and protected will you feel IN-MOLD POLYCARBONATE SHELL with PC+ American Gray EPS Liner, to offer you a real protection against shocks. When you look for a good helmet, you must find this safety standard as a premise. Our helm DUAL FIT ADJUSTABLE & REAR LED TAIL LIGHT system allows you to adjust the helmet to fit perfectly. In addition to the ADJUSTABLE STRAP will provide a DUAL FIT adjustment that will make your experience further comfortable OPTIMAL VENTILATION, GoMax helmet is designed with 22 Air Vents ensuring optimal air flow and minimal resistance, allowing air to pass through in efficient and easy way. This feature, plus the BUILT-IN DETACHABLE VISOR, makes it perfectly suitable to be used in sunny/hot weathe 100% SATISFACTION GUARANTEE as all GoMax products. Please consult our size chart guide before placing the order. If for any reason you don't feel comfortable with our helmet, we can assist you with any doubt you may have or refund you if necessary. Your safety is our priority