Okay pet parents, get ready to make your furry friend the most festive pup on the block with this adorable Christmas dog t-shirt! The cotton fabric is lightweight and comfortable, so your dog won't feel restricted or overheated during holiday gatherings. The funny 'This Dog Believes in Santa' printed on the back is sure to get plenty of smiles and compliments. Now, here's the important part - this is size XL with a neck measurement of 14.9 inches and chest measurement of 21.2 inches, but PLEASE measure your dog carefully before ordering because pet clothing sizes can vary wildly between brands. The pull-over design with two leg holes makes it pretty easy to get on and off, even for wiggly dogs. The high-cut belly is a smart feature that lets your dog do their business without getting the shirt wet or dirty. Whether you're taking holiday photos, having family over for Christmas dinner, or just want your pup to join in the festive spirit, this shirt adds that perfect touch of holiday cheer. It's comfortable enough for all types of weather and won't irritate your dog's skin. Just remember - if your dog's measurements fall between two sizes, always go with the larger one for better comfort. This isn't just a cute outfit; it's a fun way to include your four-legged family member in all the holiday festivities while keeping them comfortable and stylish!