1 Chest
With arms relaxed at your sides, measure under your arms, around the fullest part of your chest.
2 Waist
Measure around your waist at the narrowest part.
3 Hips
Standing with feet hip width apart, measure around your hips at the widest part.
4 Sleeve
With arm relaxed at your side and slightly bent, measure from center back neck, across shoulder to elbow.
Sizing Notes
98.6 tennis apparel is designed for full comfort, effortless motion, and ergonomics. Our fit is classic tailored with super stretch fabric and articulation for great fit and feel. To find your size, first calculate your body measurements, then select your product size. If you prefer a looser fit, we suggest you go up one size.
Size Chart
| Size | Chest | Waist | Hip | Sleeve |
| S | 35-37 | 28-32 | 35-37 | 17 |
| M | 37-41 | 32-35 | 37-41 | 18 |
| L | 41-44 | 35-38 | 41-44 | 19 |
| XL | 44-48 | 38-41 | 44-46 | 20 |
| XXL | 42-44 | 46-49 |