Girls Cotton Long Sleeve Mock Neck Leotard Made from a comfortable 90 percent cotton & 10 percent Lycra Blend Zipper closure in back Seams on sides Conversion for Childrens Sizing: X-Small = 2-4 Small = 4-6-----Intermediate =6x7----- Medium= 8-10----Large = 12-14----- X-Large= 14-16