ToBeInStyle Girl's Assorted Style Rompers Pull On closure Girl's Rompers. Assorted Styles. Materials: 65% Cotton, 35% Polyester Machine Wash Ok. Tumble Dry Low. Do Not Bleach. Available in sizes 2T, 3T, 4T, 5, 6, 6X Sizes are true to size. Model is 4.5 years old, wearing size 4.