A. What a lovely pet sweater! Whether you're taking your puppy/kitten for a walk or bringing it to a party, this sweater could be a good choice, especially in this season. B. How to Choose the Right Size for Your Pet 1. It is recommended to measure your pet's chest circumference and back length to get a proper fit. 2. If your measurement is between two sizes, it might be better to choose the larger size. 4. As your dog grows, you can consider ordering a larger size. C. Size Chart - Size L: Chest circumference 18.9 inches, neck circumference 15 inches, back length 15 inches. D. Warm Tips - It is suggested to measure your pet carefully before purchasing. - Due to manual measurement, an error of 1 - 3 cm is possible. - Due to differences between different monitors, the pictures may not accurately represent the actual color of the product.