Two layers of 100% cotton flannel on the outside and "alova suede" inner (100% polyester) to keep away moisture from the skin. Serged for superior durability. Sewn-in soaker pad made out off 4 layers of super absorbent microfiber. Hidden elastic around the legs and in the back for snug fit. Hook & loop fasteners with fold back laundry tabs for a strong hold. FULLY washer and dryer safe (medium heat). Do not use bleach or fabric softener.