eVysor glasses are designed for working horses. They are particularly recommended for protecting the eyes of horses with ophthalmic or photosensitive conditions. All lenses are UV-treated, but there are differences between the visors available.

A category 0 corresponds to light transmission greater than 80%, i.e., transparent or nearly transparent glass.
The higher the category index, the lower the light transmission. For example, category 3 is the most commonly used for our sunglasses (between 8 and 20% light transmission).
For humans, there is a category 4 reserved for use on the high seas or in the mountains, which is prohibited for driving (3 to 8% transmission).
Below are the different visor tints and associated indices (eQuick manufacturer's website):
| visor color | category / index | light transmission |
| transparent | 0 | 98% |
| orange | 1 | 46% |
| blue | 2 | 42% |
| green | 2 | 38% |
| rainbow (rainbow) | 2 | 20% |
| dark (dark) | 3 | 10% |
Except for transparent visors, all visors are gray! They vary in shade, but they are all gray. The mirrored (or flash) coating applied to the front of the lens protects against scratches (and allows you to see the lens protection index at a glance).
The choice of shade depends on the discipline practiced with your horse and its sensitivity to light.
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