| Size | Headpiece | Noseband | Cheek Strap |
| Small Pony | 24.5cm | 22cm | 8.5cm |
| Pony | 27cm | 23.5cm | 9.5cm |
| Cob | 29.5cm | 25cm | 10.5cm |
| Full | 32cm | 32cm | 11.5cm |
Size Guide Hy Equestrian Head Collar
| Size | Headpiece | Noseband | Cheek Strap |
| Small Pony | 24.5cm | 22cm | 8.5cm |
| Pony | 27cm | 23.5cm | 9.5cm |
| Cob | 29.5cm | 25cm | 10.5cm |
| Full | 32cm | 32cm | 11.5cm |
