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 the Buffalo Tools 3 ft. x 3 ft. Interlocking Rubber Mats. This pack comes with four 3 ft. x 3 ft. flexible rubber mats with interlocks on 2 sides. This mat helps you create a custom shape for your space that covers up to 36 square feet of space. Its 3/8 thick perforated rubber mat gives you plenty of cushion and the non-slip surface gives you more traction when grease and other liquids get spilled. Just spray the rubber mat clean with a hose or power washer when it gets dirty.