XL: chest length: 46cm/18.11", back length: 36cm/14.17", neck length: 29cm/11.41", suitable for dog weight: 9.91 - 12.12lb. For the best fit, please be sure to measure your dog carefully before selecting a size. Made of high quality meterial: flannel, soft and silky to wear. Lovely design cute dog outfits for dogs male female. Great outfit for holiday season, Christmas, Halloween and pet party, etc. Warm and Cozy dog clothes for small dogs boy or girl even in the cold winter days. If any of the measurements are between two sizes, choose the larger one. Please allow color difference due to lighting effects, monitor settings, etc. Please measure your puppy’s cat’s chest and back length,for the growing puppy, you’d better choose the bigger size. If you hesitate between two sizes, choose the big one.