TSG All-Terrain Knee Pads are hard-shelled protection against falls and slides on any surface, whether your skating takes you through the streets, into the parks, or even onto the derby track. Strong, tear-resistant nylon construction helps each pad withstand the wear and tear associated with falling down, working to withstand abrasions, tears, and breakdowns. Hard PE caps reduce friction when you do fall and EVA foam cups disperse the forces that come along with those impacts. These cups, and the pad itself, are ergonomically designed and shaped like horseshoes to offer enveloping protection all around the knee and this design also results in a better, more secure fitting pad that stays put