Size Charts Men's Under Armour Sizes S M L XL 2XL 3XL Waist [inches] 28-29 30-32 34-36 38-40 42-44 46-48 Chest [inches] 34-36 38-40 42-44 46-48 50-52 54-56 Men's Sizes XS S M L XL 2XL 3XL Waist [inches] 28-30 30-32 32-33 33-34 36-38 40-42 44-48 Chest [inches] 30-32 34-36 38-40 42-44 46-48 48-50 50-52 Women's Under Armour Sizes (Standard Fit) S M L XL Size 4-6 8-10 12-14 16 Chest [inches] 33½-35½ 36-38 38½-40½ 41-43 Waist [inches] 25½-27½ 28-30 30½-32½ 33-35 Women's Sizes (Missy Cut) XS S M L XL 2XL Size 0 0-2 4-6 8-10 12-14 16-18 Chest [inches] 28-30 30-32 32-34 36-38 40-42 44-46 Waist [inches] 23-24 25-26 27-28 30-32 33-35 36-38 Youth Under Armour Sizes (Standard Fit) YS YM YL YXL Size [inches] 8 10-12 14-16 16-18 Chest [inches] 26-28 28-30 30-32 32-34 Youth Sizes 6M 12M 18M 24M 2T 3T 4T 5/6T 7 8-10 10-12 14-16 Size 6 months 12 months 18 months 24 months 2 toddler 3 toddler 4 toddler 5/6 toddler XS S M L Weight [pounds] 12-17 17-22 22-27 27-30 30-34 34-39 39-45 45-56 56-72 72-84 84-96 96-120 Height [inches] 23-27 27-29 29-31 31-33 33-36 36-39 39-42 42-45 45-51 51-56 56-60 60-67 Hat Sizes XS S M L XL Size 6¾ 7 7¼ 7½ 7¾ Head Size [inches] 21⅛ 21⅞ 22⅝ 23½ 24⅜ Head Size [centimeters] 54 56 58 60 62 Custom Jersey Sizes Adult Under Armour S M L XL 2XL Chest [inches] 44 46 50 52 55 Youth Under Armour S M L XL Chest [inches] 40 44 46 48 Youth Nike S M L XL Chest [inches] 34 37 39 40