Amazing! I love the blade you knocked into the table to make sure the foam was trimmed smoothly. I like making and cleaning shoes .without shoes we can not move it is the most valuable item a man can own and delicate him self with. Man that's so impressive, since puzzle mats are a tough foam material they're perfect for protecting feet from the hard ground and since it's made to withstand the abuse of small children in a playroom it definitely will hold up to wear and tear of being used as a flip flop sole.