Minimizing knee fatigue and increasing the time a finisher can spend on a slab can be done with the use of Marshalltown plastic kneeler boards. The 19-in x 13.5-in Foam Kneeling Pad's plastic construction allows the boards to be extremely lightweight, maneuverable and extremely easy to clean for the next job. The 19-in x 13.5-in Foam Kneeling Pad offers extra comfortable support for knees and extra large handle grips. The black foam pad securely fastened to large polypropylene tray.