Flame resistant. Made of 100% Polyester. Tee includes printed application. Pant has elastic waist band and overall print. Machine wash cold. Non-Chlorine bleach when needed. Rinse thoroughly. Tumble dry low. Cool iron if needed. Do not dry clean. For kids to retain flame resistance use detergent only. Do not use soap. Sizes run as follows: XX-Small (2T-3T), X-Small (4), Small (5-6), Medium (7-8), Large (10) and X-Large (12-14)