Size: 5# (width 2.52 inches) Set of 4 Dog Shoes This set of non-slip boots will be their good partner, providing traction and paw protection in everyday environments. Rottweiler and all common dogs. How to measure: ÉStep 1. Place your dog’s paw on the paper. ÉStep 2. Mark the length and width of the legs , including toes and fingernails. Use the longest and widest size for a perfect fit. Note: For accurate data, the legs of 4 dogs must be measured. Integrated size upper (inch) 1#: 1.57 inch/4 cm width 2#: 1.77 inch/4.5 cm width 3#: 1.97 inch/5 cm width 4#: 2.25 inch/5 width .7 cm 5#: width 2.52 inches/6.4 cm 6#: width 2.76 inches/7 cm Memory allocation error: 0.11-0.20 inches.< br />Package includes: a pack of 4 dog boots