Constructed of flexible Neoprene over a durable, waterproof pad - Self-adjusting strap fits all avid gardeners - Easy-care machine washable Whether they like it or not, most gardeners end up on their knees, either to plant this or weed that, and that's where Kneelon Knee Pads come in handy. Kneelons are made from extremely flexible Neoprene over a durable, waterproof pad. Kneelons are easier to use than a kneeling pad, thanks to stretchable, secure straps. Wear Kneelons comfortably, for hours at a time, over pants or right against the skin. Easy-care machine washable. One size adjusts to fit most.