This is a cool sleeping pad I bought at Birthday a few years ago(^^) I used it in rotation with another sleeping pad for a year. It seems to be very cool, and my child would sleep soundly when using this one. The elastic has stretched because I attached it to a thick futon. I have sewn up part of it, so I am offering it at a low price. This doesn't seem to be reversible, but the back is a smooth fabric, so I used to flip it over and use it except in summer. You can use it all year round. I plan to compress it and send it via Yu-Packet Post(^^) I may change between Rakuraku and Yu-Yu. I may use recycled packaging materials from stores like Yodobashi Camera(^^) Please understand.