Sizing: For an Italian greyhound collar, please select our small size (15-24cm). Please note; the breed name is mentioned here merely as a reference or size guide. Your hound may fall outside these numbers, and there are other sighthound breeds not mentioned here that can of course wear these collars. The most important thing is to measure your particular hound. Once you have placed your order we will be in touch to get your dogs exact neck measurement. Please refer to our guide for measuring your dog to get the correct size for the collar, and the best possible fit. We will then use the neck measurement you provide to be the middle of 5 holes on the collar, which will allow for movement in either direction, tighter or looser.