Modovo Portable Dog Backpack Saddle Bag for Dog Adjustable Buckle Reflective Strips Design Bust 30.3"-34.2" L Size (Blue) Durable, breathable freely. Adjustable double buckle in Bottom,there are breathable and comfortable cushion on the back. Reflective Strips Design,PU breathable mesh in the middle to ensure the dog breathable freely. Medium size:Bust 30.3"-34.2",Length 10.2"*13.7" for dog. Package Included:Dog Backpack x 1,Card x 1.Only by our card can enjoy our service