We often get questions from customers as to which size is right for their pet.
Whilst we with gladly offer information and advice ultimately, this decision has to rest with the customer for a number of reasons.
Mainly because pets of the same breed may differ and have different sizes based on weight, height, length etc. The same dog apparel will fit dogs of different breeds and same weight differently. Pets also differ according to breed. Also manufactures sizes vary for example, a certain breed may fit a small for one manufacturer, but may be an extra small for another.
The accurate sizing can only be made if the actual pet is measured.
You must measure your pet when it is standing up.
You won't get accurate measurements if the pet is sitting or lying down.
Weight should be used as a guideline only as it will not give an accurate length or width.
Usually a previous collar (which fits!!) is a good starting place if you want to measure for a new collar, but manufacturers vary on measurements depending on a particular product. For your pet's safety and comfort, please measure for a dog collar by measuring your dog's neck.
DOG COLLARS ~ HOW TO MEASURE FOR A COLLAR
As a general guide, you should be able to fit two fingers (flat) easily between the tape and your dog's neck.
Remember, a collar shouldn't be tight around your dog's neck and it wouldn't be the exact measurement of your dog's neck. But for safety reasons....so it doesn't snag on something, it shouldn’t be too loose either. A snug fit is what you are aiming for. Not a tight one or one that chokes.
Collar sizes are the overall size of the collar. Please measure the dogs neck - allow for no more then two fingers space between collar and dogs neck otherwise the dog will invariably slip its collar and also; all leather will 'give' a little over time.
Sizing comparisons: 14" = 36cm - 16" = 41cm - 18" = 46cm - 19" = 49cm
HARNESS ~ HOW TO MEASURE FOR A HARNESS
Harness sizes are based on your pet's 'girth' measurement. The harnesses are adjustable, so select the size nearest your pet's measurement.
Measuring for Harnesses
Measure snugly around the ribcage, just behind the front legs. Allow about 10% extra for comfort. The girth should rest close to the front legs so that it is supported by the ribcage, not the belly.

DOG COATS ~ HOW TO MEASURE FOR A COAT
Certain breeds e.g. greyhound, or an over or underweight dog may need a custom fit. There are two measurements that need to be made in order to get the correct fit.
For the length, one of the most important measurements, measure the backbone of the dog from the base of the neck to the start of the tail. That's the start of the tail ---not the very tip. Just the base of the dog's back where the tail starts.
Start the neck measurement where the collar would sit naturally on the pet's back.
Also measure around the chest 1/2"behind the front legs. This is the thickest part of the chest. This measurement is often referred to as the girth. Remember that this may vary by breed.
Remember to check dog size against individual product items.