BE GOOD Pet Sweater Hoodies Coat Army Green Camouflage Sweatshirt Clothes for Small Dog Puppy 5 Sizes Available XS - back length: 7.5''/19cm; chest: 11.8''/30cm; Neck: 7.8''/20cm; S-- back length: 9.4''/24cm; chest: 14.1''/36cm; Neck: 9.4''/24cm M --back lengt: 11.4''/29cm; chest: 16.5''/42cm; Neck: 11.4''/29cm L --back lengt: 13.3''/34cm; chest 18.9''/48cm; Neck: 12.6''/32cm XL--back lengt: 15.3''/39cm; chest: 21.3''/54cm; Neck: 14.1''/36cm Note: when we choose a cloche for our pet,chest is the priority,then it's back length.To avoid this hoodie is too big or too small for your dog, please carefully measure your dog!