121 Amy

The 121 muzzles are brand new and designed to fit the bigger dogs who don't have enough room to pant in the 110 and 107.
Lightweight running / racing muzzles from the Don Pare range allow your dog to pant freely due to their depth and open basket design making them the first choice for off lead running and activities such as canicross, bikejor and lure coursing, and they can have a noseband added for enhanced comfort.
 The basket style means it is easy to feed treats through the gaps, and the dogs can also take drinks.
 
The circumference around the basket of the 121 Amy is 38cm, and the basket part of the muzzle is 9.5cm wide.
 
Available in 3 lengths, 200mm, 225mm, 250mm, the muzzles also have an adjustable head strap  to ensure the perfect fit.
 
The basket on the muzzle measures 9.5cm which will suit most breeds of dogs except the XL Bullies with their wide heads. 
The basket on 121 Amy measures 38cm in circumference, and the internnal height  measures12.5cm.
121 Bertha is bigger (of course, Big Berha!) and measures 42cm in circumference and the internal height is 14cm.
 
If you need help with sizing then please complete the form with as much information as possible; 
https://www.themuzzleshop.com/how-to-measure
 
This link may also help you to work out which size you need:
https://www.themuzzleshop.com/assessing-the-depth
 
 
 
 
A keeper strap or muzzle stop can be used to help keep the muzzles in place and prevent the dog losing them.  A minority of dogs may benefit from either the keeper strap or muzzle stop but this is not the norm, we find if the dog is in a well fitted muzzle that allows them to pant then very few will try and remove them, however some dogs may lose a muzzle in undergrowth on walks. . 
 
Please note that dogs with a high prey drive or a history of reactivity/aggression towards other dogs may still be able to inflict injuries whilst wearing muzzles especially if they are off lead and not under your close control.