Size: small collar: 10inch-13inch (25-33cm), bust: 10inch-13inch (25-33cm), back length: 9 inch (22cm). High Quality Materials: Nanshan dog life jacket adopts inflatable insert design, and its buoyancy is better than ordinary foam and plastic dog clothes on the market. It can not only protect the safety of your dog, but it is also very suitable for all boating, sailing and other water sports activities with your dog. Special design: the life jacket Nanshan doggie is designed with colorful high visibility fabrics and reflective stripes to keep your dog in sight. Very comfortable: There are adjustable hook-and-loop straps on the neck and abdomen for s ensure your pet waist is more comfortable when you put on this dog life jacket, allowing your dog to swim freely on the water and comfortable enough. Metal buttons, release buckles fast and safety handles: triple safety guarantees, wider and thicker handles at the back, making parents feel better when training or catching dogs for a long