Our cozy jumpers keep your darling warm and snuggled up on autumn and winter walkies. Also great to combine with our tableware. sizing chart Neck (A) Chest (B) Back Length Collar to tail (C) Lower length (D) Full back XS 26 cm 30-38 cm 26cm 23cm 32cm S 30 cm 37-42 cm 28 cm 27 cm 35 cm M 32 cm 40-52 cm 34 cm 30 cm 40 cm L 38 cm 46-64 cm 42 cm 34 cm 50 cm LL 38 cm 46-64 cm 43 cm 40 cm 52 cm XL 38 cm 46-64 cm 45 cm 44 cm 54 cm For example: XS - Small Puppies, Chihuahua S - Bigger Chihuahuas, Bigger Puppies M - Pugs, Mini Dachshunds, Small Frenchies, Small Shihtzu, Maltese L - Cavapoo, Cockapoo, Big Shihtzu