BCG Diamond Plate Fitness Gym Flooring System 12-Pack Durable EVA foam absorbs shock and impact Water-resistant Infused with Microban antimicrobial protection Diamond plate interlocking mats with finishing borders are expandable and multiple sets (sold separately) can be combined to cover large areas BCG 12 Pk - 12 In X 12 In X 12" Tile Size - .5Inch thick