Size 1: 25 cm Chest ~20 cm length eg 1-2 kg toy breed pups
Size 2: 30 cm Chest ~25 cm length eg 2-3 kg chihuahua
Size 3: 35 cm Chest ~30 cm length eg 3-4 kg maltese
Size 4: 40 cm Chest ~35 cm Length eg 4-6 kg Bichon
Size 5: 45 cm Chest ~40 cm length eg 6-9 kg jack russel
