50% cotton/50% polyester fabric delicately edged with lace. ÒStretch-lockÓ, moisture-proof pouch sewn into panty holds super-absorbent liner in place without leakage or discomfort. Free absorbent liner included. Size b hips. Plus, Hip size: 46-50", Extra, Hip size: 43-44",Large, Hip size: 41-42", Medium, Hip size: 39-40".