Tee made of 60% Cotton and 40% Polyester; Pants made of 100% Fleece Polyester. You'll want to stay in this soft-as-a-feather loungewear all day! Fitted V-neck, cap-sleeve tee has allover heart burn-out and a felt outline of Hello Kitty. Pants are detailed with allover Hello Kitty print and faux button fly. 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. Warm iron on reverse side if needed. 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.