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UNISEX SIZING
| SIZE | SMALL | MEDIUM | LARGE | XL | XXL | XXXL |
| CHEST | 30-33 | 34-37 | 38-42 | 43-46 | 47-50 | 51-54 |
| SLEEVE | 33 | 34 | 35 | 36 | 37 | 38 |
| SIZE | SMALL | MEDIUM | LARGE | XL | XXL |
| CHEST | 34-36 | 37-40 | 41-42 | 43-45 | 46-50 |
| NECK | 13.5-14 | 14.5-15 | 15.5-16 | 16.5-17 | 17.5-18 |
| SIZE | SMALL | MEDIUM | LARGE | XL | XXL |
| CHEST | 36-38 | 39-42 | 43-44 | 45-46 | 47-48 |
| NECK | 15.5-16 | 16-16.5 | 16.5-17 | 17-18 | 18-18.5 |
| SLEEVE | 32.5-33.5 | 33.5-34.5 | 34.5-35.5 | 36-37 | 37-38 |
UNISEX SIZING
| SIZE | XS | SMALL | MEDIUM | LARGE | XL | XXL |
| CHEST | 32-35 | 36-39 | 40-42 | 43-45 | 46-48 | 48-51 |
| SLEEVE | 32-33 | 33-34 | 34-35 | 35-36 | 36-37 | 37-38 |
All measurements are in inches, unless otherwise noted.Measurements refer to body dimensions, unless denoted by *. Fit may vary based on style and personal preference.
Created for days that don’t slow down, Southern Marsh's Ballycastle Performance Polo offers an easy balance of comfort and refinement. The lightweight fabric feels smooth against the skin and stays breathable when the pace picks up, making it a go-to for everything from morning rounds to afternoon plans. Finished with a subtle Southern Marsh logo at the back neck, this polo brings a modern edge to a classic staple—effortless to wear, easy to style, and made to move with you.