OC73 Size Chart
| Size | WAIST |
| XS | 21.7-23.6 inch / 55-60cm |
| S | 23.6-25.6 inch / 60-65cm |
| M | 25.6-27.6 inch / 65-70cm |
| L | 27.6-29.5 inch / 70-75cm |
| XL | 29.5-31.5 inch / 75-80cm |
| 2XL | 31.5-33.5 inch / 80-85cm |
| 3XL | 33.5-35.4 inch / 85-90cm |
| 4XL | 35.4-37.4 inch / 90-95cm |
| 5XL | 37.4-39.4 inch / 95-100cm |
| 6XL | 39.4-41.3 inch / 100-105cm |