Amazon.com : Sivan Fitness 1/2" Thick Rubber Top High Density EVA Foam Gym Flooring for Home Gym - 24 Sq Ft Exercise Mat Tiles for Workout, Yoga, MMA, Heavy Exercise Equipment Mat -
4′ X 50′ X 6 MM GRAY SPECKLE RUBBER FLOORING ROLL - Gym Pros
Goodyear Rubber Flooring 20-in W x 20-in L x 0.24-in T Interlocking Rubber Gym Floor Tile (88.89-sq ft) (32-Pack) in the Gym Flooring department at Lowes.com