Bike Helmet, Sifvo Bike Helmets For Men And Women, Mountain Bike, 62Cm?M/L? ?RELIABLE SECURITY? The bike helmet uses advanced integrated molding technology to tightly combine sturdy matte PC shell with thickened impact-resistant EPS core, safer and more durable. Trustworthy CPSC+CE dual certification ?360 PROTECTION?The full-coverage design of this mountain bike helmet provides a higher level of all-around protection for the head, including the back. Suitable for a wide range of sports types ?EXCELLENT VENTILATION?18 vents create a perfect air circulation system for this adult bike helmet which help to keep your head cool and comfortable at all times and reduce air resistance during the ride ?ADJUSTABLE LIGHTWEIGHT?With the knob on the back of this bicycle helmet and the soft chin strap, you can easily find your most comfortable state. No neck fatigue or discomfort even on long rides ?COOL VISOR?The removable visor will protects your eyes from direct sunlight and the skin of the face from being scratched by tree branches while not blocking the view