Holly & Co. - Adjustable Harness Size Guide
| SIZE | NECK | CHEST |
| XXS | 23 - 28cm | 27 - 37cm |
| XS | 29 - 36cm | 36 - 48cm |
| S | 35 - 44cm | 41 - 54cm |
| M | 39 - 51cm | 46 - 61cm |
| L | 42 - 56cm | 57 - 83cm |
| XL | 48 - 63cm | 59 - 88cm |
| SIZE | NECK | CHEST |
| XXS | 23 - 28cm | 27 - 37cm |
| XS | 29 - 36cm | 36 - 48cm |
| S | 35 - 44cm | 41 - 54cm |
| M | 39 - 51cm | 46 - 61cm |
| L | 42 - 56cm | 57 - 83cm |
| XL | 48 - 63cm | 59 - 88cm |