i'm disappointed with so many reviews that i saw complaining about the size. read the description. it tells us the size. and i *0ove* the size of these mats! i think they are the perfect size, about 1 foot for each square. personally, i assumed that there wud be some flat edge pieces. but the description made no mention of such. it was my own preconcieved notion. this prodect is exactly as described, from what i can tell. i love that the tiles are a small 1 foot by 1 foot size, super easy to fit together, and the color i picked is pretty to me. they are light and perfect for what i want to use them for (a soft flooring for my in-home gym). note: the instructions say to ventilate for 24 hours before use. i'd recommend to follow that if you will be putting these in your mouth. (wink) Or if a baby will be using these, you might want to follow that. honestly, the worst i can find is that the instructions need a proofreader. this is moot, and i understood what was meant in all cases. but the instructions do live up to Chinese quality. i think the fact that i plan to buy another set in a 2nd color sayl it all. i love it! price is great too.