I never really thought about that to be honest, but I can see your point. She has a small play mat at the moment, but one roll and she is off it, so I was after something bigger. I do think that I am of the school of they are going to fall over and have bumps anyway, obviously I don't want to intentially create more hazards for her, and it's not something we plan to keep on the floor at all times, so when she starts walking we can move it and I'll turn it into a bed quilt :)