Most play tents come with a mat, but you might need to buy one separately if you're getting a used tent or if your tent didn't come with one. A play tent mat is important because it provides a safe, cushioned surface for your child to play on.nnIt also helps to keep the tent clean and dry by absorbing spills and protecting against wet grass or dirt. If you're not using a mat, be sure to put the tent on a level surface so your child doesn't fall and hurt themselves. A play tent mat is an essential part of a safe and fun play environment for your child.