These are AMAZING! I have loved having them down for my 6 month old (now 9mos) to crawl and play safely. He is not able to pull up edges but they are very easy to put back down into place. It is also an added benefit that I can sit and kneel on floor with him more comfortably with mat. I suggest getting two sets vs just one so you can really have plenty of play area. Love the wood grain grey/white color vs the bright kiddie colors out there at most baby stores. Really fits well with our house decor.