I offer two ways to size your horse

If your animal has a standard size head for it’s breed, feel free to choose a size from my chart here. If you measure your horse around the entire circumference of the nose below the point of the cheeks that will help you find a match. (red below) But if your animal has any unusual features and is otherwise hard to fit, please provide all the custom measurements from the diagram below. 

Standard Halter Size Chart
Small up to 18" Most Ponies
Medium up to 21" Arabs, Cobs
Average up to 24" Quarter Horses, Most Horses
Large up to 26" Thoroughbreds, Warmbloods
XLarge up to 28" Belgian, Drafts

Custom Halter Measurements

If you need a custom halter these are the measurements.
1. Measure across the top of the nose from point of cheek to oppposite point of cheek. (turquiose)
2. Measure around the circumference of the nose. (red)
3. Measure from point of cheek to back of jaw. (green)
4. Measure around the collar. (blue)

Watch the video below for a demo.