Use This information to pick out the right sizing for your Canine. Measure across widest Portion of the paw when bearing bodyweight. If in between sizes, size down. Dogs might have larger sized entrance paws than rear paws - measure all paws. Here within the Hatchbag Business, our boot liners 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