This is a U-shaped cushion made of breathable mesh fabric. It has a strap that allows you to adjust the size of the hole. I purchased it on Amazon for childbirth, but I only used it a few times and it hasn't lost its shape at all. I am selling it because the wound after childbirth has healed and I no longer need it. Photos 7 and later are screenshots from the Amazon product page. Thanks to the slope on the thighs, it was easy to sit without feeling cramped in the legs. Because it is U-shaped, you can change the size of the hole and adjust it to the condition of the perineal wound. The cover is removable, so you can wash it, which I think is convenient. It will be shipped from Chiba Prefecture via Yu-Pack size 80. Thank you for looking. I can take photos from other angles. Please feel free to ask any questions via message.