Puppia Ritefit Dog Harness Red Size:Extra Large SIZE CHEST NECK BREEDS XS SIZE CHEST NECK BREEDS XS 24 34cm 22cm New Puppy S 32 48cm 26cm Chihuahua M 36 58cm 32cm Jack Russel L 48 72cm 40cm Shih tzu XL 55 80cm 43cm Cocker Spaniel XXL 66 96cm 53cm Labrador Size 10: Chest up to 13" Neck up to 13" Length 9 11"Size 12: Chest up to 15" Neck up to 14" Length 11 13"Size 14: Chest up to 17" Neck up to 15" Length 13 15"Size 16: Chest up to 19" Neck up to 16" Length 15 17"Size 18: Chest up to 21" Neck up to 17" Length 17 19"Size 20: Chest up to 23" Neck up to 18" Length 19 21"Size 22: Chest up to 32" Neck up to 20 The soft and breathable material used in our harnesses puts NO pressure on your dog's neck and helps your dog achieve maximum comfort while you feel secure knowing your dog is safe Just undo the clasps around the neck