CHOOSE THE RIGHT JACKET: The dog life jacket comes in 6 sizes (XXS, XS, S, M, L, XL), suitable for puppies, small, medium, and large dogs of all breeds. Please measure your dog's ribcage girth at the DEEPEST part, just behind the front legs, and refer to our SIZE CHART to select the correct size for your dog | FOR YOUR DOG'S SAFETY: The VIVAGLORY dog life jacket is constructed with extra padding to provide strong buoyancy in the water without restricting your dog's movement. Your dog will feel at ease while swimming or engaging in other water activities. The hook and loop system around the belly and neck will securely fasten the life vest to your dog | CONVENIENCE & FIT: The VIVAGLORY dog life preserver features a durable grab handle on the top of the jacket, making it easy to pull your dog out of the water when needed. The D-ring is for attaching a dog leash. Adjustable straps and durable quick-release buckles ensure easy on and off, allowing the life jacket to fit your dog perfectly | HIGH VISIBILITY: The dog life vest comes in bright colors with reflective trims, enhancing your dog's visibility in and out of the water. This allows you to quickly identify your dog | WARM TIPS: The lifejackets provide your dog with added safety and endurance while swimming. For your pet's safety, please do not leave your dog unattended while they are wearing the life vest. Allow them some time to get used to wearing the life vest before using it