Custom Designer Dog Collar and Leash Standard Sizing Fabric Pet Collar Measuring Instructions XXS 3/8” width 4”-6” length Measure completely around the neck placing two fingers under tape measure XS 3/8” width 7”-10” length Small 5/8” width 9”-15” length Leashes are the same width as the fabric collar chosen and are approximately 59 inches in length Medium 3/4" width 12”-22” length Large 1” width 14”-24” length XLarge 1” width 25+” length