These heavy-duty knee pads are made with a high density foam liner which is water resistant and provides maximum protection. The flexible rubberized shell provides superior resistance against abrasive surfaces and the adjustable wide nylon straps provide better fit and increased comfort. These knee pads offer excellent protection on all types of surfaces, including concrete, interlocking brick, masonry work, landscape and garden surfaces, roof, carpet, and other floorings. One size fits all. Packaged per pair.