This is a Montbell dog collar. I checked the buckle before trying it on, and it was so small that there was no need to try it on. It is new, unused, and has never been tried on. Size: XS Neck size: 15-20cm Weight: Up to 8kg For reference, here's some information about my dog: Breed: Mix (Chihuahua and Dachshund) Weight: Under 3kg * Although an adult dog, it is small enough to be charged the puppy rate for grooming. Only the collar will be shipped. (The backing card will not be included.) Although it is a new, unused item, it has been stored at home. Please purchase only if you understand this.