The Broadest part of the chest (shown as Chest on the illustration) For chest measurement, you need to measure the chest at its widest point, which is typically right behind the front legs. If the dog has a large girth, going up a size in the top is advisable, as more fabric will be used up.
The Length of the backbone (shown as Back Length on the illustration) Measuring should be done along the dog's backbone from the base of the head to the base of the tail. This is from the base of where the collar rests to where the tail is attached. The measurements you see on all our Dog Wear indicate measurement. However, it's important that the dog's girth be taken into account as well as the Body Length Measurement.
The Circumference of the neck (shown as Neck on the illustration)The neck size determines whether the dog will be comfortable wearing clothing. If the neck is too tight, it would be hard for the dog to breath.
There are different sizing ranges for different types of garments, due to how binding or flexible the material used is.
The most important is the chest and length.
Remember all dog-clothing manufacturers have different sizing so XS by one company may Medium by another company’s measurements so always check the measurements on each garment.