SIZE GUIDE
How to Measure Your Dog
A good fit keeps the vest from shifting and makes the handle easy to grab. You’ll need a soft tape measure and about two minutes.
Vest Harnesses & Low-Profile Harnesses
Measure the girth: wrap the tape around the widest part of the rib cage, just behind the front legs. Keep it snug but not tight.
Medium 21.5–28.5" girth
Large 27.5–36" girth
X-Large 33.5–45" girth
Fits Service Dog, ESA, Therapy Dog, Medical Alert, PTSD, Autism, POTS, Allergy Alert and Support Animal vests and harnesses. Between sizes? Choose the larger size and tighten the straps.
Cape Style Vests
Measure the girth the same way, around the widest part of the rib cage.
Small 17–22" girth (43–56 cm) · no-pocket cape only
Medium 22–27" girth (56–69 cm)
Large 27–32" girth (69–81 cm)
X-Large 32–42" girth (81–107 cm)
The cape with an ID pocket starts at Medium, because a Small doesn’t have room for the pocket.
