The new Back on Track® 3D Mesh Brushing Boots with faux fur lining are made with Welltex™, our mineral infused fabric that provides a unique combination of protection, quality and well-being. The soft faux fur lining and 3D mesh outer layer (with shock-absorbent padding) ensures breathability and guarantees a perfect, comfortable fit. These all-purpose boots are suitable for both front and hind legs and are easy to apply with the adjustable touch tape closures. (Also available without faux fur lining) SIZING(height by inside measurement): X-Large-13.25" (3 Velcro Straps) https://botcanada.com/ Sizing charts can be found https://botcanada.com/sizing-charts/