Standard size, stretchy and so comfortable. With a small elastic at the waist. The brown-blonde model is wearing a size 7 and ordered the medium. The platinum-blonde model is wearing a size 3 and ordered the small.
 Small = 3-5 years
 Medium = 6-8 years
 Large = 9-10 years
 X-large = 11-12 years
 Fabric: 75% Nylon, 25% Spandex