CanaDog Supplies’ Shorty harness is the perfect harness for canicross, skijoring, scootering or bikejoring. Sizing will vary with breed and body structure of the dog, but a general weight range has been provided to assist in your selection. Product images shows 4 month old Suka (almost 20 pounds in weight) in a small blue shorty harness. Colours vary by size while supplies last!