These lightweight running/racing muzzles 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. The gaps in the 103 measure 1 x2cm maximum making them useful to help prevent scavenging items bigger than this. Length: Measure the length of your dogs head in a straight line from behind their ear, to the tip of the nose. The muzzles will fit lengthwise if the dog measures between 17- 20cm approx. Depth:This is important to make sure your dog can pant freely. Hold a loop of tape over the end of the dogs nose at 26cm to see if they will have enough room to pant. They typically need 4-8cm depth to allow them to pant freely. The measurements below are the measurements of the actual muzzles, and not the size of dog they will fit. To ensure a good fit, you need a good panting depth. Length 18cmCircumference 26cmBasket length 8cm
