Size Chart(Product Measurement):

8 Years: Bicep Length: 9.3", Bust: 25.0", Cuff: 8.9", Length: 12.2", Shoulder: 10.2", Sleeve Length: 6.5"

9 Years: Bicep Length: 9.6", Bust: 26.2", Cuff: 9.2", Length: 12.7", Shoulder: 10.6", Sleeve Length: 6.9"

10 Years: Bicep Length: 9.9", Bust: 27.4", Cuff: 9.5", Length: 13.2", Shoulder: 11.0", Sleeve Length: 7.2"

11-12 Years: Bicep Length: 10.5", Bust: 29.7", Cuff: 10.1", Length: 14.3", Shoulder: 11.8", Sleeve Length: 7.9"