1. The life jacket is equipped with a whistle, which can be used in an emergency 2. There are strong reflective strips on both sides of the shoulders, which are eye-catching and easy to identify, increasing the safety index 3. The socket uses 3 rows of new POM material, which can be adjusted in length. It is suitable for people of various body types. 4. Support logo customization 5. Thickened Oxford fabric, high-density water release performance. Filled with high-floating foam.