Pants have a drawstring waistband. Made from 100% Peruvian Cotton. This item is not intended for sleepwear. Sizing and Fit : This item fits true to size. Garments that are 100% cotton will shrink when washed. We advise sizing up if you feel you are between sizes. Care Instructions: Due to the nature of Pima cotton, items will shrink upon first washing. In order to ensure the softest and longest life for your Lila and Hayes pieces, please follow our care instructions. Machine wash with like colors. Delicate cycle in cold water. Lay flat to dry.