Wondermat® original Designer Series Mats
We introduced this line of foam mats back in 1992! It's stood the test of time, and that's because the material quality was first-rate from day one, and the interlock design allowed all three tiles sizes to connect together with each other, and two border options let the system get within about 4 inches of any dimension right out of the box. We called it the "Standard Series" because it set The Standard; there was no more versatile design out there. There still isn't a better design for general purpose mats on the market today.