The chest measurement is taken about 3-4 cm behind the armpit. The Easy Fit harnesses with lace closure can be adjusted up to a maximum opening of about 10 cm. When choosing the harness, always keep these small tips in mind: If the harness is too loose or too tight, the size or model is not right: the harness must adapt perfectly to your pet.
To check that the size is correct, pass a finger between the harness and the body of your pet: if you slide your finger touching both sides, the size is correct; if it is too tight to insert your finger between the body and the bib, the size is too small; if you slide your finger in the middle without touching either the bib or the body, the size is large.
If you have a puppy it is preferable to choose the harness model adjustable girth or lace closure because his body is in the growth phase. The important thing is to change size when the harness becomes too small (eg when the harness reaches shoulder level). For animals with bulky thorax or with particular builds such as the Pug, the Dachshund, the French Bulldog it is preferable to choose the adjustable girth model harness.
For dogs with a tendency to pull and bite, we recommend plastic closures. For cats, bunnies or small dogs (such as Chihuahua) we recommend the lace closure