Material: 65% Cotton And 35% Polyester Fiber. Size Reference: Small(10)= 9-10 Years, Medium(12)= 11-12 Years, Large(14)= 13-14 Years, X-Large(16)= 15-16 Years, XX-Large(18)= 17-18 Years. Style/Design: Short Sleeve and Long Pants, Friendly for girl's sleep all night. Soft cotton and breathable, protect kid's skin. Round neck, for easy on/off. Design with cute cartoon patterns, novel and funny. Best Gift:It's a good gift for Birthday, Thanksgiving Day, Christmas, and so on. Let your girl's outfit a little extra stylish touch by replacing her clothes with a crop top and loose Washing: Machine wash or hand wash available.