Made of 100% Combed Cotton Knit. You'll love the clever animal sayings and motifs on these fun PJs! Shortsleeve t-shirt features raw-edge contrasting trim and a roomy fit. Comfy pants have a drawstring and elastic waistband; no pockets or fly; roomier than yoga style pants. Print is permanently dyed into fabric and will not fade or run. Machine wash cold with like colors. Non-chlorine bleach when needed. Tumble dry low. Remove promptly. Warm iron as needed. Sizes run as follows: XS (chest 30"-32", waist 24"-26"), Sml (chest 34"-36", waist 28"-30"), Med (chest 38"-40", waist 32"-34"), Lrg (chest 42"-44", waist 36"-38"), XL (chest 46"-48", waist 40"42").