Please make sure you check the measurements below before orderingse also allow for 1-3cm variation in the sizes. Training Buckle Collars have the following sizes: Small – Fits neck 25-43cms (10 – 17″) 25mm wide – Small to medium dogs as adjustable Large – Fits neck 38-64cms (15-25″) 38mm wide – Medium to Large dogs as adjustable Please measure your pooch so you get the right size. We recommend you use a seamstress tape measure. If you don’t have a seamstress measuring tape, mark the measurements on a piece of string and measure against a ruler or rigid measuring tape. Neck – Measure the circumference of the neck. Notice the neck measurement is closer to the ears. For Harnesses, measure around the collarbone. Length – To get the length of your dog, measure from the base of the neck (where the collar would sit) to the base of their tail. Chest/waist – To get the chestwaist size of your dog, measure around the broadest part of his chest. Keep the tape measure snug, but not tight – you should be able to fit a finger between the measuring tape and your dog. The BLIND DOG range is helping the public understand that you dog has limited or no vision. Many people panic or get very distressed when coming across a large breed. Children presume that dogs are nice and walk up to them to stroke them. How would they know what the dogs nature is? Our unique range of colour coded dog collars, leads and harnesses are helping responsible dog owners all over the world to educate the public about their dog’s behaviour. These products are high quality and are made from a thick polypropylene webbing that is strong enough to pull a car. The wording is embroidered on so it will stay on there for life.