Muttluks Snow Mushers Dog Boots Muttluks are soft on paws and tough on terrain. Barefoot technology that's "pawsitively" comfortable. Snow Mushers are a unique combination of quality, comfort, and durability for your dog. Features: Rugged winter boots Fleece, inner lining for cozy winter use 100% recycled, flexible, and rugged rubber soles with traction tread Extra-large opening makes boot easy to get on Unique double-wrap fastening system Elastic, soft-cinch fastening is easy on dew claws and offers secure fastening Reflective accents provide nighttime visibility and safety Item Specifications: Package Count: 2 boots per package Sizes: XXS/XS: 2.5" and under XS: 2.5-2.75" XS/S: 2.75-3" Small: 3-3.25" S/M: 3.25-3.5" Medium: 3.5-3.75" M/L: 3.75-4" Large: 4-4.25" How to Measure: Please see information listed under our Downloadable Resource Section. Note: For Snow Mushers, size the front paw and choose one size smaller for the back paws.