Feel for the last rib on your male dog. Measure from collar to the last rib. Omit this measurement for females.
Measure from collar to the ring on your dog's harness.
Measure from collar to base of tail or where you want the sweater to stop on your dog's behind.
Hold the measure on the chest and get the measurement of the SPACE between the legs for the front panel of the sweater.
Measure around the neck where the collar lays.
Measure around the chest just behind the front legs.