Your cart
Close Alternative Icon
Down Arrow Icon
Bag Icon

Sizing Chart

For the most accurate boot sizing, measure all four legs of your horse 

For example: If the fetlock joint circumference measures, 10.75 inches then use a medium boot that covers at least 11.25 inches. Keep in mind that it is not uncommon for a horse to wear a different boot size on the front legs than they do on the rear legs

Having a comfortable fit is essential to keeping the legs protected and cool.

The chart below indicates the height of the lower leg, the circumference of the fetlock joint, and how many hands your horse measures (distance from the ground to the highest point of the withers).

The Z BOOT is available in large, medium, and small sizes.




  • Take into consideration all 3 measurements, including density of the lower leg bone, to indicate the right boot size for your horse.
  • The fetlock joint circumference is the most important measurement to consider in choosing the right size. This is an area that is most susceptible to impact, penetration, and overheating.
  • The boot material should overlap in this area of the fetlock joint and should have no gap where the leg is not covered by the boot.
  • DO NOT OVER-TIGHTEN THE BOOT to cause an overlap in the boot. If a gap is visible or you are having to pull the boot tight to overlap the boot then you will need a larger size of boot (please refer to the chart above).
  • To be safe, it is best to choose the next boot size up from the measurements you have taken of your horse. The boot should fit snug, but not tight since a tight boot slows blood circulation and tendon flexion.

If you have additional questions email us at and we are happy to reply within 24 hours.