Please note that not all of our helmets are convertible. At this time, the only convertible helmets we offer are our H1 and H2 Helmets.If you have one of these helmets, you can convert your helmet into a bike/skate helmet by following these steps:Unfasten the clipUnsnap the earmuffs, slide them off the straps and out of the helmetRemove the fleece netted capInstall the extra foam pieces to the interior Velcro for a comfortable fitting bike helmet