Durable and LightweightIn-molding technology joins thick EPS foam core and the outer polycarbonate shell to ensure better shock absorption, giving you the best protection when road cycling or mountain biking. Ultralight, weighing only 280 grams / 9.9 ounces. You dont even feel it on your head.^Good VentationThe 22 large vents help to circulate air through the bike helmet, releasing warm air out from the rear vents, leaving your head cool and fresh, perfect for long summer rides. The helmet inside is lined with removable pads, for easy cleaning and keeping fresh smelling helmet.^Adjustable SizeThe bicycle helmet allows for up and down adjustments as well as tension around the head via the dial in the back. Plus the adjustable straps, they enable you to wear the helmet in the correct position, just below the occipital bone, perfectly cradling your head, for a feeling of reassuring comfort.