For the past 40+ years, every point at the US Open has been scored with a Wilson US Open tennis ball. Unparalleled consistency and performance make it the gold standard in tennis, trusted by the best in the game when it's all on the line. Crafted with premium woven felt, this ball is available in Extra Duty.
Reviews
Men's Tennis Apparel
Size | Chest | Waist | Inseam |
S | 36-37 | 30-32 | 32 |
M | 38-39 | 33-34 | 32.5 |
L | 40-42 | 35-36 | 33 |
XL | 43-45 | 37-39 | 33.5 |
2XL | 46-48 | 40-42 | 34 |
Size | Chest | Waist | Inseam |
S | 91-94 | 77-81 | 81 |
M | 97-99 | 84-87 | 82 |
L | 102-107 | 90-92 | 84 |
XL | 109-114 | 94-99 | 84 |
2XL | 117-122 | 102-107 | 86 |
How to measure
Chest
Measure around the fullest part of the chest.
Waist
Measure around the natural waistline.
Seat
Measure around the fullest part of the seat.

Women's Tennis Apparel
Size | Bust | Waist | Hip | Inseam |
XS (0-2) | 31-32 | 25-26 | 34-35 | 79 |
S (4-6) | 33-34 | 69-71 | 91-94 | 80 |
M (8-10) | 90-92 | 74-77 | 96-102 | 81 |
L (12-14) | 94-97 | 79-81 | 104-110 | 82 |
XL (16-18) | 99-102 | 84-90 | 112-117 | 84 |
Size | Bust | Waist | Hip | Inseam |
XS (0-2) | 78-81 | 64-66 | 86-90 | 79 |
S (4-6) | 84-87 | 69-71 | 91-94 | 80 |
M (8-10) | 90-92 | 74-77 | 96-102 | 81 |
L (12-14) | 94-97 | 79-81 | 104-110 | 82 |
XL (16-18) | 99-102 | 84-90 | 112-117 | 84 |
How to measure
Bust
Measure around the fullest part of the bust.
Waist
Measure around the natural waistline.
Hip
Measure around the fullest part of the hip.

Boy's Tennis Apparel
Size | Bust | Waist | Seat | Height |
XS (6) | 23-24 | 22-23 | 24-25 | 46-48 |
S (7-8) | 26-27 | 23.5-24.5 | 27.5-28.5 | 49-54 |
M (10-12) | 27-28 | 25.5-26.5 | 29-30.5 | 55-59 |
L (14-16) | 30.5-32 | 28-29 | 32-34 | 60-64 |
XL (18-20) | 33-35 | 29.5-30.5 | 35-36.5 | 66-69 |
Size | Bust | Waist | Seat | Height |
XS (6) | 58-61 | 56-59 | 61-64 | 118-124 |
S (7-8) | 66-69 | 60-62 | 70-72 | 125-138 |
M (10-12) | 69-71 | 65-67 | 74-77 | 142-150 |
L (14-16) | 77-81 | 71-73 | 81-86 | 156-162 |
XL (18-20) | 84-89 | 75-77 | 89-92 | 169-175 |
How to measure
Chest
Measure around the fullest part of the chest.
Waist
Measure around the natural waistline.
Seat
Measure around the fullest part of the seat.

Girl's Tennis Apparel
Size | Chest | Waist | Hip | Height |
XS (6) | 23–24 | 22–23 | 24–25 | 46–48 |
S (7-8) | 26–27 | 23.5–24.5 | 27.5–28.5 | 49–52 |
M (10-12) | 28–30 | 25–26 | 30–32 | 53–57 |
L (14-16) | 32–34 | 28–30 | 34–36 | 58–62 |
Size | Chest | Waist | Hip | Height |
XS (6) | 58-61 | 56–58 | 61-64 | 118–124 |
S (7-8) | 66-69 | 60-62 | 70-72 | 125–133 |
M (10-12) | 71–76 | 64–66 | 76–81 | 135–145 |
L (14-16) | 81–86 | 71–76 | 86–91 | 148–158 |
How to measure
Bust
Measure around the fullest part of the bust.
Waist
Measure around the natural waistline.
Hip
Measure around the fullest part of the hip.

Men's Tennis Footwear
US | 7 | 7.5 | 8 | 8.5 | 9 | 9.5 | 10 | 10.5 | 11 | 11.5 | 12 | 12.5 | 13 | 14 |
UK | 6.5 | 7 | 7.5 | 8 | 8.5 | 9 | 9.5 | 10 | 10.5 | 11 | 11.5 | 12 | 12.5 | 13.5 |
EU | 40 ⅓ | 41 | 41 ⅓ | 42 | 42 ⅔ | 43 ⅓ | 44 | 44 ⅔ | 45 ⅓ | 46 | 46 ⅔ | 47 ⅓ | 48 | 49 ⅓ |
US | 7 | 7.5 | 8 | 8.5 | 9 | 9.5 | 10 | 10.5 | 11 | 11.5 | 12 | 12.5 | 13 | 14 |
UK | 6.5 | 7 | 7.5 | 8 | 8.5 | 9 | 9.5 | 10 | 10.5 | 11 | 11.5 | 12 | 12.5 | 13.5 |
EU | 40 ⅓ | 41 | 41 ⅓ | 42 | 42 ⅔ | 43 ⅓ | 44 | 44 ⅔ | 45 ⅓ | 46 | 46 ⅔ | 47 ⅓ | 48 | 49 ⅓ |
Women's Tennis Footwear
US | 5.5 | 6 | 6.5 | 7 | 7.5 | 8 | 8.5 | 9 | 9.5 | 10 | 11 |
UK | 3.5 | 4 | 4.5 | 5 | 5.5 | 6 | 6.5 | 7 | 7.5 | 8 | 9 |
EU | 36 ⅓ | 37 | 37 ⅔ | 38 ⅓ | 39 | 39 ⅔ | 40 ⅓ | 41 | 41 ⅓ | 42 | 43 ⅓ |
US | 5.5 | 6 | 6.5 | 7 | 7.5 | 8 | 8.5 | 9 | 9.5 | 10 | 11 |
UK | 3.5 | 4 | 4.5 | 5 | 5.5 | 6 | 6.5 | 7 | 7.5 | 8 | 9 |
EU | 36 ⅓ | 37 | 37 ⅔ | 38 ⅓ | 39 | 39 ⅔ | 40 ⅓ | 41 | 41 ⅓ | 42 | 43 ⅓ |
Junior Tennis Footwear
US | 11 | 12 | 13 | 1 | 1.5 | 2 | 2.5 | 3 | 3.5 | 4 | 4.5 | 5 | 5.5 | 6 |
UK | 10.5 | 11.5 | 12.5 | 13.5 | 1 | 1.5 | 2 | 2.5 | 3 | 3.5 | 4 | 4.5 | 5 | 5.5 |
EU | 28 ⅔ | 30 | 31 ⅓ | 32 ⅔ | 33 ⅓ | 34 | 34 ⅔ | 35 ⅓ | 36 | 36.5 | 37 | 37 ⅔ | 38 ⅓ | 39 |
US | 5.5 | 6 | 6.5 | 7 | 7.5 | 8 | 8.5 | 9 | 9.5 | 10 | 11 |
UK | 3.5 | 4 | 4.5 | 5 | 5.5 | 6 | 6.5 | 7 | 7.5 | 8 | 9 |
EU | 36 ⅓ | 37 | 37 ⅔ | 38 ⅓ | 39 | 39 ⅔ | 40 ⅓ | 41 | 41 ⅓ | 42 | 43 ⅓ |
Unisex - Footwear Conversion Chart
US (Men's) | 4 | 4.5 | 5 | 5.5 | 6 | 6.5 | 7 | 7.5 | 8 | 8.5 | 9 | 9.5 | 10 | 10.5 | 11 | 11.5 | 12 | 12.5 | 13 | 14 |
US (Women's) | 5.5 | 6 | 6.5 | 7 | 7.5 | 8 | 8.5 | 9 | 9.5 | 10 | 10.5 | 11 | 11.5 | 12 | 12.5 | 13 | 13.5 | 14 | 14.5 | 15.5 |
UK | 3.5 | 4 | 4.5 | 5 | 5.5 | 6 | 6.5 | 7 | 7.5 | 8 | 8.5 | 9 | 9.5 | 10 | 10.5 | 11 | 11.5 | 12 | 12.5 | 13.5 |
EUR | 36 ⅓ | 37 | 37 ⅔ | 38 ⅓ | 39 | 39 ⅔ | 40 ⅓ | 41 | 41 ⅓ | 42 | 42 ⅔ | 43 ⅓ | 44 | 44 ⅔ | 45 ⅓ | 46 | 46 ⅔ | 47 ⅓ | 48 | 49 ⅓ |
US (Men's) | 4 | 4.5 | 5 | 5.5 | 6 | 6.5 | 7 | 7.5 | 8 | 8.5 | 9 | 9.5 | 10 | 10.5 | 11 | 11.5 | 12 | 12.5 | 13 | 14 |
US (Women's) | 5.5 | 6 | 6.5 | 7 | 7.5 | 8 | 8.5 | 9 | 9.5 | 10 | 10.5 | 11 | 11.5 | 12 | 12.5 | 13 | 13.5 | 14 | 14.5 | 15.5 |
UK | 3.5 | 4 | 4.5 | 5 | 5.5 | 6 | 6.5 | 7 | 7.5 | 8 | 8.5 | 9 | 9.5 | 10 | 10.5 | 11 | 11.5 | 12 | 12.5 | 13.5 |
EUR | 36 ⅓ | 37 | 37 ⅔ | 38 ⅓ | 39 | 39 ⅔ | 40 ⅓ | 41 | 41 ⅓ | 42 | 42 ⅔ | 43 ⅓ | 44 | 44 ⅔ | 45 ⅓ | 46 | 46 ⅔ | 47 ⅓ | 48 | 49 ⅓ |
