Pambra's The Original Bra Liner is the premier bra liner. This incredible bra liner is top quality, made in the United States, and primarily cotton, making it comfortable and machine washable.The liner is held in place by the tension of the bra or the weight of the breasts, and it wicks sweat, prevents irritation and chaffing and makes wearing bras a far more comfortable experience.Because there are 3 liners in every pack, you won't have to do the wash every day, though they are all machine washable.Plus, Pambra's Bra Liners are doctor recommended!Pambra's come in three different colors - white, beige and black - and 5 different sizes. The size should be selected based on the bra size you wear. Pambra's are designed to run from either side of your body - not all the way around.Small = 34-36, liner is 14" acrossMedium = 36-38, liner is 18" acrossLarge = 38-40, liner is 26" acrossX-Large = 42-46, liner is 30" acrossXX-Large = 48-50, liner is 36" across