Alfie Pet by Petoga Couture - Ron Backpack Harness with Leash Set Size Small best fits breast girth: 11"-14". Backpack: 4" length, 1.25" width and 5" high. Leash is 48" long and 0.5" wide. We highly recommend you measure your pet precisely with a flexible tape measure to ensure the best fit. Contact us if you have question. We are happy to help. Functions as both a harness and backpack. Zippered pouch for storage of goodies. Comes complete with a matching leash. Feature a sturdy D-ring for easy leash attachment. Hand wash recommended. Perfect for everyday walk and weekend party, or just making your pet look its best.