The ProFlex 390 Extra Large Kneeling Pad is built with a beveled safety edge and provides cushioning comfort and knee protection for static kneeling situations on large work surfaces. This kneeling mat is made with thick nitrile rubber (NBR) closed cell foam which will keep its shape over time and won't absorb liquids. The durable closed-cell foam is non-conductive, resistant to petroleum and silicone-free. A built-in convenient handle allows for easy transport and hanging storage making it the perfect knee cushion for work on the jobsite, in the garage, the garden or at home. This extra-large kneeling pad is designed for kneeling on cold surfaces, hard steel, concrete, grating, gravel and wet surfaces. Ideal for mechanics, construction, plumbers, electricians, flooring or anyone looking for comfortable knee support without having to strap on work knee pads. Also great as a garden kneeler or for work around the house. Elbow/Knee Pad Type: Knee; Impact Resistance: Petroleum; Water; Size Group: X-Large; Material(s): NBR Foam.