There is relatively little discussion of eye problems in horses. Numerous articles are published in specialist magazines and online about lameness, colic, back problems, dermatitis, etc. However, having discussed this issue on numerous occasions with equine veterinarians, it is clear that uveitis is becoming increasingly common and, with it, the need for specific, lengthy, and intensive treatment, not to mention the pain and discomfort experienced by the horse itself, which can even cause it to become unruly.All measurements are approximate and are provided for informational purposes only.
| Mask size | Head circumference |
| XS - Shetland | 84 cm |
| S - Pony | 90 cm |
| M - Cob | 94 cm |
| L - Full | 100 cm |
| XL - XFull | 110 cm |
For these masks, the main measurement is the width of your horse's forehead. To do this, you need to add together three measurements:
Add these 3 measurements (A+B+C) to obtain the size of your horse's forehead.
IMPORTANT: Do not measure directly from one eye to the other, as this will likely result in an inaccurate measurement.

| Mask size | Forehead size |
| XS - Shetland | 7.5–8.7 inches |
| S - Pony | 8.7–11.4 inches |
| M - Cob | 11.5–13.5 inches |
| L - Full | 13-14 inches |
| XL - XFull | 15-17 inches |

| Size | A | B | C |
| XS (large Shetland) | 60 cm | 84 cm | 20 cm |
| S (pony) | 70 cm | 96 cm | 9.5 inches |
| M (cob) | 70 cm | 96 cm | 9.25 inches |
| L (full) | 75 cm | 105 cm | 27 cm |
If your horse is between sizes, we recommend choosing the smaller size.
| Mask size | Distance between the eyes |
| S - Pony | 18 cm |
| M - Cob | 21 cm |
| L - Full | 9.5 inches |
| XL - XFull | 26 cm |

Made a mistake? Exchanges are always possible, and we will process them as quickly as possible provided that you return the item to us intact within 14 days.
> See the return policy