Using this FOX mountain bike helmet is a breeze. First, adjust the 360 - degree fit system to get a snug fit on your head. Then, use the Fidlock® SNAP buckle to secure it. You can adjust the visor to 3 different positions to match your goggles. When riding, you'll enjoy great protection from the MIPS technology and Dual - density Varizorb EPS. For maintenance, if the XT2® liner starts to smell, simply remove it and wash it. And always remember to avoid exposing the helmet to aerosol sprays like bug repellent and sunscreens, as they can cause the finish to peel.