Although it's labeled as size S, I was able to wear it until my due date even though I was originally a bit chubby, so I think it would fit a size M as well. Maternity pants with a check pattern, the waist is made of stretchy black material. - Design: Check pattern - Waist: Black, stretchy material - Size: S - Material: 98% cotton, 2% polyurethane, ribbing 95% Thank you for viewing. Color: Black系 (Black-based) Season: Spring, Summer, Autumn Condition: No stains, tears, or odors