Provides the knees comfortable support and protect - so no more sore knees. A 1/2" thick foam cushion provides knees with a comfortable support and protection. The 12-1/4"x13-1/2" pad is securely fastened to a durable tray. The lightweight polypropylene tray features hand holds for easy transport. The tray is washable and chemical resistant. The tray and pad are both washable and chemical resistant. A favorite of concrete finishers, tile installers, plumbers, electricians, gardeners, automotive mechanics, and more.