The back of the waist is elastic, so it stretches quite a bit. This is a flared skirt with a waist ribbon, made of soft polyester material. It has been worn a few times and stored in a drawer, so there are wrinkles on the hem, etc. - Size: 4L (Waist 93-101cm) - Material: 95% polyester, 5% polyurethane - Design: Flared skirt, waist ribbon Thank you for looking.