The Oakley DRT3 Trail Bike Helmet is the perfect combination of style and safety for any avid mountain biker. Its lightweight design features a high-performance polycarbonate shell for maximum protection against impact aided by MIPS technology that reduces rotational forces to the brain during a crash. With 16 large vents, a 360 degree adjutable BOA fit system, and a removable and washable liner, you can stay cool, fresh, and dialed in on every ride.