Pelvic belt to firmly support the pelvis after childbirth. I opened it, but I never used it and just stored it away. - Product Name: Kyutto Belt - Size: 87cm-105cm - Material: 96% nylon, 4% polyurethane - Inner Material: 100% polyurethane resin - Usage Period: From after childbirth up to 6 weeks - How to Wear: Easy to put on, designed to stay in place Thank you for looking.