Onbros Bike Helmet Adults - Road Bike Helmet For Women And Men Cycling Helmet Fit System: Bike helmets for adults are suitable for head circumference of 56-61cm/22.04-24.01inch, the round adjustment at the back and the chin strap of the helmet can easily adjust the bicycle helmet to the right size Cool and Comfortable: Bike helmet adult men with a soft liner and chin pad. This adult bike helmet are designed with 14 vents to keep ventilation Stylish Helmet: Bike helmet women adult are designed with integrated smooth curves, and the helmet shell is designed to keep the helmet low profile with a distinctive look, suitable for bike commuting, riding and skating Safety Bicycle Helmet: Adult bike helmet consists of reinforced ABS shell and thickened shockproof EPS core, providing you with all-round protection during cycling and skating, it also has CPSC and CE dual certification Multi-Purpose Helmet: This retro bike helmet is perfect for commuting, skateboarding, skating, scootering, longboarding and road biking a variety of outdoor activities