Old Navy Maternity Sweatpants – Size M – Gently-Used This is a listing for a pair of Old Navy maternity sweatpants that have been gently-used. According to the label these are 93% cotton and 7% polyester – and can be machine-washed in cold water. Thanks for stopping by! While you are here, please check out my eclectic closet. I have a lot of new and like-new home items, women’s clothing and accessories (including maternity and baby items) men’s items, games, toys, adult novelty items, traditional office supplies and greeting cards for all occasions. New to Poshmark? If so, welcome! Use code bargain_beauty1 for $10 off your first purchase!