It’s made with our exclusive and patented Exoskeleton technology with a 2-piece in-mold Duo Density EPS foam construction. A denser outer layer of foam protects your head in an and a softer inner layer that cushions the brain after initial impact, providing the double protection. The VIO also features MIPS technology (Multi-directional Impact Protection System) that helps protect against angled impact. To top it all off, it has an adjustable cradle for superior comfort, our Fidlock magnetic closure for easy on and off, and 9 vents to help keep you cool. Complies with U.S. CPSC Safety Standard for Bicycle Helmets for Persons Age 5 and Older