Nine interlocking tiles that are 3x3 and 38 thick. High quality, commercial rubber floor, not the lower quality foam tiles. This is 81 sq. ft., enough for a 9x9 workout area, weight rack, or home gym. Great for rubber bumper plates, kettle bells, box jumps, cross fit, or general fitness. All good condition, no excessive wear or damage. Expandable if youd like to add more. Email, call, or text.