Made of 100% Cotton. The Tank is ribbed cotton that closely fits the body and contrasting color around neck and sleeves add style. Tank is long in length. The pants are are straight-legged and fitted through hips and thighs with no pocket or fly, with elastic waistband and drawstring. Washing Instructions: Machine Wash Cold, Non-Chlorine Bleach When Needed, Tumble Dry Low, Warm Iron As Needed. Sizes run as follows: X-Small (1-3), Small (4-6), Medium (6-8), Large (10-12), X-Large (14-16).