Made of 100% Cotton. This comfy loungwear is sweet and girlie! Fitted v-neck t-shirt falls below hips and is accented with puffed sleeves and bow detail. Too cute! Hello Kitty on t-shirt has a glittery bow! Loose elastic waistband pants have a contrasting color drawstring and feature an allover print. Turn inside out. Machine wash cold. Wash separately or with like colors. Gentle Cycle. Only non-chlorine bleach when needed. Tumble dry low. Remove promptly. Do not iron. Sizes run as follows: Small (3-5), Medium (7), Large (9) and X-Large (11-13). This is the teen/adult line - the sizes run small, but this is not the kids line.