Ergonomically designed to enclose the knee and upper shin, wear-resistant snap shell easily remove and replace with other snap shells to have the perfect knee pad for any job, 2 in 1: Use knee pads with or without push button shell, maximum pressure distribution for all day comfort, bendable rubber prevents scratches and scuffs, rubber conforms to the ground, high side panels almost completely prevent slipping away from the knee, elastic EVA leg straps stay comfortably in place without restricting circulation or cutting behind the knee, high quality buckles, durable materials and construction, abrasion resistant 1680D material.