Men's Short Sleeve Sizing Information:
| Inches/cm | XXS | XS | S | M | L | XL | XXL | XXXL | 4XL | 5XL | 6XL |
| Chest/Stomach (Inches) | 33.9 | 36.2 | 38.6 | 40.9 | 43.3 | 45.7 | 48.0 | 50.4 | 52.8 | 55.1 | 57.5 |
| Chest/Stomach (cm) | 86.0 | 92.0 | 98.0 | 104.0 | 110.0 | 116.0 | 122.0 | 128.0 | 134.0 | 140.0 | 146.0 |
Women's Short Sleeve Sizing Information:
| Inches/cm | XXS | XS | S | M | L | XL | XXL | XXXL | 4XL | 5XL | 6XL |
| Chest/Stomach (Inches) | 33.5 | 35.0 | 36.6 | 38.2 | 39.8 | 41.3 | 42.9 | 44.5 | 46.1 | 47.6 | 49.2 |
| Chest/Stomach (cm) | 85.0 | 89.0 | 93.0 | 97.0 | 101.0 | 105.0 | 109.0 | 113.0 | 117.0 | 121.0 | 125.0 |