100% cotton. Sweat pads that can be attached to bras, washable and reusable, making them economical! Attaches to the bra, so it fits the underarm. Built-in waterproof fabric that prevents sweat from passing through! Gentle cotton feel. Size: Fits the underarm. Material: 100% cotton. Adjustable with adjusters. Fabric does not stretch. One set consists of one right and one left pad x 3 sets. Fabric transparency: Opaque. Color: Beige. Two sets are new. One set was used once and washed. I'm selling them because they didn't suit me. Thank you for looking. *Ships on weekdays.