<b>Size Chart (Inner Sole)</b><br> Small ( Insole: 2.15"W )<br> Medium ( Insole: 2.35"W ) <br> Large ( Insole: 2.55"W ) <br> XLarge ( Insole: 2.83"W ) <br> XXLarge ( Insole: 3.15"W ) <br><br> <b>How to measure:</b><br> 1. Have your dog stand on blank paper. <br> 2. <b>Trace the left and right side of paw. Mark and Measure the widest point by ruler.</b> <br> 3. Refer to the size chart to choose the applicable size. <br><br> Note: <br> *For the best fit, match the size in the size chart to your pet’s measurements as closely as possible.