High-density foam for stability when exercising, foam material provides a cushion to lessen the impact of bodyweight exercises on your joints. Protective Flooring:The mats are made of high density foam material. Sturdy enough while giving you necessary cushion,nd safeguard your floor from scratches, and dents. Waterproof and Easy to Clean: The puzzle piece mat can be cut to fit for custom size. Lay single piece or multiple pieces and it will fit anywhere.and the foam easy to clean. Easy to Assembly:The Exercise mat can be connected or disassembled within 5 ,Trust , and safe crawling pads in playrooms for infants, toddlers and kids of all ages Multi-Prupose:Water-proof and noise-reducing features make the puzzle exercise mat easy to clean.Also works great or baby play room and areas around that need a little extra cushion and safety - can work anywhere (garage, , kitchen or office as a standing mat) size:30x30x1.2cm Material: colour:black Package Contents: 12 * Exercise Mat Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.