Our shearling “DUGGZ” shoes are truly a unique item. Fully covered with Sherpa & Suede. Your dog can now travel with real fashion in these comfortable shoes. These shoes also feature Thinsulate insulation inner lining. Keeping your Dog even warmer! Sizing Instructions: Please measure the Sole of your Pets Foot – Length * Width (“In” Inches): XS: 2.4 * 1.5 SM: 2.8 * 1.7 MD: 3.0 * 1.8 LG: 3.4 * 2.0 XL: 3.7 * 2.2