ThinLine Flexible Filly Slow Feed Grazing Muzzle, 2.5 cm Opening

Regular price $84.00 USD
Sale price $84.00 USD Regular price


Softer, Smarter & Safer!

  • The Flexible Filly Slow Feed Grazing Muzzle is unlike the typical cage-like equine grazing apparatus' of the past.
  • Designed this to be softer, lighter, and less behaviorally restrictive, the Flexible Filly Muzzle is constructed of a durable and pliable material that radically improves the horses’ feel.
  • Effective while also being soft on equine teeth and lips, the Flexible Filly Muzzle is well-ventilated and SAFE, rated to break just before your turnout halter. 
  • Additionally, the grazing hole size is adjustable, allowing you to offer the perfect grazing options.
  • ThinLine's research has determined that horses dislike muzzles because they cannot behave naturally in them. 
  • With the historical cage-like or bucket-like versions, horses are unable to engage in social activities like wither scratching or other playful interactions resulting in social and emotional health in horse herds.


  • So light your horse won’t even know they are wearing it.
  • Safe.
  • UV Protection for sensitive noses.
  • Adjustable Grazing Hole Size.
  • Each muzzle comes with 12 zip ties. Our zip ties must be used for warranty claims
  • Use with our specially designed halter for an easy and perfect fit.

The Flexible Filly equine grazing muzzle hole size is, you guessed it, flexible!

The good news is that the Flexible Filly grazing muzzle’s limited hole size can be easily altered by horse owners for the perfect grazing opening.  ThinLine now offers muzzles with a 2+ cm hole.  To create a larger hole simply mark your muzzle with a pen and use a pair of scissors to cut the size you need.

Because every horse’s needs are different we offer you a fully customizable grazing hole for your equine muzzle.  It is easy to have extraordinary comfort for your horse and the perfect grazing hole size for all metabolic and environmental issues.

The muzzle is ideal for slowing down speedy eaters, limiting grazing, and can help curb minor cribbing problems. The muzzle can also keep horses from chewing on leg wraps, wood, or blankets. It works extremely well with all automatic waterers and has UV protection, much like sunscreen for those delicate noses.

Available Sizes , Order by your horse’s halter size.

Mini/Pony: Larger Miniature horses and up to large pony. Center grazing hole size: 2.5+ cm only

Cob/Horse: Cob, Arabian, Quarter Horse, or Horses on the smaller side. Center grazing hole sizes: Restricted is 2.5+ cm or regular 3.5+ cm.

Oversize/Draft: Larger horses, drafts, warmbloods, and oversize. Center grazing hole sizes:  Restricted is 2.5 + cm or regular 3.5+ cm.

For the ultimate in equine comfort, the ThinLine Grazing Muzzle Halter and ThinLine Halter Liner Padding are sold separately.


Quick Fitting Tips:

With the horse’s head in the upright position do not be alarmed if it touches the lips. Keep in mind horses spend most of their time with heads at ground level. This makes more room in the muzzle.

If your horse is attempting to eat out of the sides, this generally means they are not able to get grass through the center hole.  The size of the center grazing hole needs to work with other variables such as the height and thickness of the grazing grass.  We provide the smallest of grazing holes with the ability to enlarge it.  Just look to see if you might need to enlarge the hole.

If the problem persists, check the horse’s fit while in the grazing position.

a) Lower your halter and make sure your muzzle is not on the top hole, the more “leggy” the fins are the easier it is for them to try to eat out of the sides.  Raise the entire muzzle up several holes.  If this does not work you might need a smaller muzzle.

b) Make sure the fins between the front (or back) fin and the side (attached to the square ring) are evenly spaced.  If you have the fins neighboring the center front or center rear too close to the center one the horse will be able to eat out of the sides rather than the grazing hole.

The closer you fit the muzzle to your horses’ lips the less likely it is they will step on the muzzle and tear it.

Wear at the grazing hole:  Some horses use this muzzle for years without wear, and some wear the grazing hole in a few months.  It will depend on how aggressive your horse is with its teeth.  One of the great features of this muzzle is that it does not damage teeth.  If we make the muzzle more durable we will lose that.  If you experience some wear at the grazing hole just keep an eye on it. When the hole becomes too large, over about 4-5 cm, you will need to purchase a new muzzle.

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Pickup available at 615 Germantown Road

Usually ready in 24 hours

ThinLine Flexible Filly Slow Feed Grazing Muzzle, 2.5 cm Opening

21" Small Mini/Pony
  • 615 Germantown Road

    Pickup available, usually ready in 24 hours

    615 Germantown Road
    Raleigh NC 27607
    United States