HemingWeigh Puzzle Exercise Mat EVA Foam Interlocking Tiles - Available in Sizes from 120 Square Feet- 144 Square Feet 6 Pack Sets includes 36 Heavy Duty Foam Tiles Includes Border Ends-Allows for a neater look, Made out of high density EVA foam for greater durability and comfort Protects floors while providing a comfortable workout area, Double-sided, non-slip surface grips the floor to prevent injuries When using all 36 Tiles, Puzzle Mat will cover 144 Square Feet