Anyone who has stood on a hard concrete floor for longer than a few minutes will tell you how hard the surface can be on your feet, knees, and back. Reduce the fatigue and soreness with this Interlocking Utility Mat. Perforated rubber provides enough cushion to reduce fatigue without creating a tripping hazard and the non-slip surface gives you more traction when grease and other liquids get spilled. Just spray it clean with a hose or power washer when it gets dirty.