Silver Pro Knee pads are ideal for work on tiled floors and other hard floorings such as wood and vinyl. Silver Pro Knee protectors are manufactured with a form-fitting foam and a non-binding single strap that will never pinch while extended wear. The knee pads are powered by a non-slip shield which increases friction and protects from cuts and or scratches. The most durable and long-lasting knee pads are covered with scratch-resistant PVC caps