Use This manual to pick the right dimension in your Pet. Measure across widest part of the paw when bearing excess weight. If between measurements, measurement down. Pet dogs may have much larger front paws than rear paws - evaluate all paws. If you’re seeking Pet dog boots for walks https://www.wanderlustprogear.com/products/4pcs-set-waterproof-pet-dog-shoes-anti-slip-rain-boots-for-small-cat-dogs-foot-cover-footwear-puppy-booties-pet-paw-accessories