Every year, more than 300,000 people die from drowning in the world, and 90% of drowning incidents occur in resource-poor countries. Today, WHO continues to learn to swim among children in this area, but learning to swim requires different types and sizes of assistive devices. (Swimming laps, floating boards, etc.), but most local children and coaches can only use easily accessible empty bottles as the main source of buoyancy, not to mention teaching aids. SAVIOUR uses recycled PET bottles as the material to use small unit design and modular combination, which can combine different types of auxiliary equipment to meet the needs of swimming teaching of each school age, mainly using recycled waste plastic as the base material: PET, HDPE and other heat Fusible plastics (regardless of whether the source is urban waste or local recyclables), and are produced using the successfully developed 3D printing technology of recycled plastics.