This is a pink donut cushion made of a linen-mix material. I seem to remember purchasing it at PLAZA for around 2700 yen as a cushion that helps with pelvic and posture correction, but I've forgotten the details. I used it occasionally about 6 years ago when I had a long period of desk work, such as studying for exams. It's shaped like two donuts joined together, and it helped alleviate pain in my tailbone and sciatica when sitting for long periods. In recent years, the cushioning is still maintained, but there are some light stains as shown in photos 4 and 5 due to home storage. As shown in photo 6, it can be folded and secured with a button for easy carrying. The button's thread is not frayed, but it's slightly loose. The cushion is still usable, so I'm putting it up for sale. The price is set considering the above condition. I hope those who don't mind the details will consider purchasing it. (Please refrain from price reductions due to shipping costs) Size: Width 46cm, Length 30cm, Thickness approx. 8cm Please refer to the photos, as I've included a measuring tape.