Made of 100% Cotton. Tank top is a babysoft 100% Ringspun Cotton with soft hand screen print that glows in the dark! Pants have trademarked David & Goliath print that glows in the dark and have a fashion exposed elastic waistband with drawstring for comfortable fit. Machine wash cold inside out. Lay flat to dry. Do not bleach. Sizes run as follows: Sml (3-5),Med (7-9), Lrg (11-13), XL (15). Please note that product is a junior's fit!