GreenGuard Grazing Muzzle Fit & Sizing Guide

A correct fit is essential for your horse’s comfort and safety— and to get the most out of your GreenGuard Grazing Muzzle. This guide helps you choose the right size muzzle, adjust it properly, and get grazing off to a good start.

How to Have a Successful Grazing Muzzle Set Up

  • Determining correct grazing muzzle size.
     

    Check Your Muzzle Size

    Hold the muzzle over your horse’s nose with the “greenguard” logo facing forward. Ensure at least 3 fingers fit between horse's nose and muzzle front.

    If space is too tight, consider sizing up or adding rub protector stickers.

    Muzzle Sizing
  • Avoiding loopy straps with your greenguard grazing muzzle
     

    Attach Muzzle to Halter

    Insert all four straps through the muzzle slots from the outside in, then feed each strap through the back keeper (each strap has both a front and back keeper for security).

    Final adjustments can be made once the muzzle is placed on the horse.

    Measuring for a Halter
  • correct angle and spacing is key to comfortable muzzle fit
     

    Adjusting Angle and Fit

    For an average horse, set the front strap at hole 6, the side straps at 8, and the chin strap at 10.

    Once on your horse, adjust the straps so the bottom of the basket is parallel to the lips, leaving about 1/2" of space between the lips and the muzzle.

    Quick Fit Check
Out of date chart for determining horse halter size. Has been superseded since 2025, with the addition of two additional sizes.

Donkey Grazing Muzzle Resources

Donkeys are especially prone to obesity and laminitis due to their efficient metabolisms. A properly fitted grazing muzzle helps limit grass intake while still allowing for natural foraging behavior.

GreenGuard Muzzles are lightweight, breathable, and available in mini and pony sizes suited for many donkeys—but donkey sizing can be a bit different.

Be sure to check out our Donkey Resource Page for fitting tips, training tricks, and everything you need to know about using grazing muzzles with donkeys.

Donkey Resources

The Complete GreenGuard Grazing Muzzle Set-Up Tutorial

Common Questions

Avoid loopy muzzle straps!

One of our most popular videos. Do you use leather straps to connect your grazing muzzle to your halter? Cinch them down with electrical tape to keep them breaking away unnecessarily.

Muzzle and halter fit check

We share this video with customers more than any other. How to double-check that your horse's muzzle and halter are fitted properly. All the most vital info in just under 2 minutes.

Horse sneaking out a corner?

If you find your horse consistently sneaking out of corners, you might want to try our hook and loop corner straps. These can be arranged around the muzzle straps, or from corner to corner, to keep horses in muzzles.

Salt and mineral access

It is difficult for horses to get at salt or mineral blocks while they are wearing grazing muzzles. We recommend setting up buckets of loose salt and minerals for them.

Got Questions? Reach Out!

Download the printable GreenGuard Grazing Muzzle Instructions in pdf format.

Need more resources? Check out our help center and video library.

Need Personalized Support?

Contact support@gg-equine.com.