<ul> <li>Measure width of paw for best fit (see photo/video instructions). The paw must be smaller than the boot size: Small 2 1/4&quot;; Medium 2 3/4&quot;; Large 3 1/4&quot;; XLarge 4. (If in between sizes, add a Doggie Sock).</li> <li>This is the boot for hunters, urban settings on asphalt or concrete, snow, and protection from salt in the winter.</li> <li>Easy to put on - difficult to slip off, two Velcro straps with slides fasten the boots.</li> <li>Tough, water resistant 1000 denier nylon material with the top of the toe wrapped, sole is flexible, skid-resistant, recycled tire material.</li> <li>The sole performs in wet and dry, hot and cold conditions and its recycled tire sole is suited for tougher conditions.</li> </ul>