How to use the dog life vest correctly We suggest to let your dog fit the life jacket before entering the water in order to your dog reject it when they are launched. Don’t forget to put the extra tape into protective sleeve to avoid hooking the debris in the water. After getting into the water, let your dog practice for a while with your companion, then, go!. How to choose a size We have improved the size, 6 sizes XS-XXL makes it suitable for the vast majority of dogs.( You can choose the size according to your dog's weight and bust In the third picture on the left. Please measure the widest part of the dog's chest (girth) as a bust reference. We recommend that you choose the larger one if you hesitate between the two sizes. Why choose our Dog Lifesaver Jacket It has a strong and soft handle at the back,you can hold it to teach your dog swim,pull the dog out of the water in an emergency. Adjustable velcro strap on the abdomen and neck makes it easier to adjust the size and with the strong concealed buckle, double insurance, make your dog more safe in the water. The remaining straps can be placed in a protective sleeve to prevent debris from being caught in the water.There is a button on top for hooking the leash. How does the CITÉTOILE Safety Vest work Our life jacket is a product professional designed for dog rafting, surfing and other water sports. The exterior of our life saver cloth is made of high-density 600D Oxford, which is resistant to tearing and biting. Internal material is EVA to increase buoyancy. This closed-cell sponges do not absorb water during long-term immersion in water and are not easily deformed. It helps dogs to maintain balance in the water and swim in the most natural position. Why do dogs need a Life Jacket? ? Dogs have the talent to swim, but not every dog can swim by nature. Dogs who are beginning to swim will feel afraid that they will not be able to relax. Small dogs who has short-leggeds such as bulldogs can hardly float on their own. Dogs are playful, they don't realize that they are tired of playing, it is easy to be physically exhausted and in dangerous. So it is essential to prepare a Life Vest for your dogs.