Size Chart(Product Measurement):

8 Years: Bicep Length: 11.0", Bust: 27.2", Cuff: 6.3", Length: 15.0", Shoulder: 10.8", Sleeve Length: 19.3"

9 Years: Bicep Length: 11.3", Bust: 28.3", Cuff: 6.5", Length: 15.7", Shoulder: 11.3", Sleeve Length: 20.1"

10 Years: Bicep Length: 11.7", Bust: 29.5", Cuff: 6.6", Length: 16.5", Shoulder: 11.8", Sleeve Length: 20.9"

11-12 Years: Bicep Length: 12.3", Bust: 31.9", Cuff: 6.9", Length: 18.1", Shoulder: 12.7", Sleeve Length: 22.4"