I would buy this mat again. It’s easy to clean and does what I expected it to do. However, it’s very lightweight and occasionally slips on tile floor when toys aren’t weighing it down. I bought two mats hoping to cover a large portion of our playroom, but I ended up ordering a third . The mat is not “squishy.” It’s pretty firm and easy to walk on, but I trust it to cushion a fall and make sitting more comfortable as compared to tile. The mat pieces are solid foam; there is no plastic lining. After 6 months of use, there is no peeling, color fading, or scratches/rips.
Assembly: I might be wrong about this, but I believe some edge pieces are modified to specifically be the corner pieces. These “corner pieces” have one edge longer than tiles of their same shape. I included a picture with circles around the difference of edge length in same-shape mat pieces. Other reviewers are mentioning “overlapping pieces,” and I think this may be why. Putting a corner piece along the edge would result in an overlap with the adjacent tile. If you can identify these corner pieces before assembly, it goes a lot smoother.
The dimensions of 3 assembled mats is 70 3/4” by 121 3/4”. The tiles are 1/2” thick.