Size dimensions: 31cm x 23cm x 9cm (lxwxh) Product feature: Featuring adjustable belts, strong construction, and a rectangle shape for stability Safety of Back Float Swim Bubble, made to provide novices more buoyancy and support. With its 3-layer belts that are adjustable, this rectangular float fits swimmers of all shapes and sizes comfortably and securely. Because it is made of high-quality materials, it should last a long time. For individuals who are starting to swim, the rectangular design provides exceptional stability and balance, making it a perfect training assistance. This float is a useful tool for kids and adults alike because it helps users gain confidence and enhance their swimming abilities. It is lightweight, portable, and convenient to transport and store, which makes it ideal for travel or swimming lessons. Note: There might be an error of 1-3 cm due to manual measurement, and slight color differences may occur as a result of varying lighting and monitor effects.