Richie House Little Girls' Stretch Leggings with Ruffle Accent Rh0135 95%cotton 5%spandex A size 2/3 is for the average 2-3 year old girl, a size 5/6 is for the average 5-6 year old girl, a size 7/8 is for the average 7-8 year old,etc Cotton lends both comfort and durability: addition of spandex makes for a unique texture and drapes softly against the body for a comfortable fit and feel Pull-up style with elastic waistband,easy to on and off