OutdoorMaster ERT Helmets for Adults - Mountain Bike Helmet Adults Men Women - Easy Adjust Breathable Lightweight MTB Helmet - Medium

[Safety: Certified by the CPSC and the ASTM the adult bicycle helmet utilizes in-mold technology combined with hard PC shell and shock-absorbing impact-resistant EPS foam padding for safety ERT System: Energy Reduction Technology provides additional protection. Deflects compresses and collapses lightweight soft built-in materials distributed throughout the helmet to protect against energy impacts UV Protection: Mountain bike helmet has a movable visor that can be easily adjusted by hand to tilt it to protect against different angles of sunlight and provide better UV protection Adjustable Fit: Bike helmets for adults is adjustable for a snug fit. You can turn the dial and adjust the chin strap to the right size to fit your head perfectly. Helmets for adults suitable for both men and women "Breathable & Lightweight: Bike helmet adult men is designed with 17 vents to maximize air flow to keep you cool and comfortable during cycling. Womens bike helmet is lightweight and wont be a burden on long rides"]