Please click on pictures to read. These play mats are perfect for those that live in apartments. Since majority of Koreans live in apartments, they had to come up with something to help with the sound absorption for the neighbors below them! It's also great for those that have hardwood/tile floors...especially when babies are still in the crawling phase. These mats are really good quality...they have like a memory foam feeling. Please note, the play mats described here are for the bigger ones we have for sale...the other smaller ones are not cushioned. The smaller ones are perfect for the park or even to use as a diaper changing pad.