sc_under-armour-adjustable

Under Armour Adjustable Size Chart
Head (in)
Men's (One Size Fits All) 22 - 23 1/2
Women's (One Size Fits All) 21 1/4 - 22 3/4
Youth (One Size Fits All) 20 7/8 - 22 3/8

 

For reference only. Fit may vary depending on materials and manufacturer.