This is a multi-mat for babies from Marushin. There are no noticeable stains, but there are some wrinkles from use. The cover is removable (see photo 11), so you can wash it and keep it clean at all times. *It has been home-cleaned and stored after use. This is a multi-mat that can be used for a long period, from the sleeping stage to when your baby can crawl and sit up. You can place it inside a playpen, or as we did, place it on top of a joint mat. During the period when your baby couldn't sit up well, we placed a mat to cushion falls, which was very helpful. We are selling it because we no longer need it as our child has grown. Please refer to photo 5 for the size. We purchased 3 sets and will be selling them together (please refer to photo 1). One set has been disassembled for size adjustment as shown in photo 10. It can also be folded compactly for storage, making it easy to keep. Please leave a comment if you have any questions. #Marushin #Yamazen #Tansu no Gen #Caraz #MultiMat #PlayMat #BabyMat #Cushion #JointMat #Mattress #BabyPreparation #BabyPlaypen #FallPrevention #BedGuard