I purchased this and stored it without using it. There are some cuts in a few places. (See photo 10) Please refrain from purchasing if you are concerned. [Size] Approximately 42cm x 42cm, thickness 4cm It has good breathability, is comfortable to sit on, and is comfortable even when sitting for long periods. Ideal for wheelchairs, desk work, long drives, etc. Even after sitting for long periods, the gel cushion immediately returns to its original shape and does not deform. It comes with a washable cover. The cover has a non-slip treatment, so you don't have to worry about it slipping when you sit. When the cover is on, it feels a little tight, but I think it will become familiar as you sit on it.