- Optimal size compatibility: designed for children 110 to 140 cm tall and weighing 10 to 28 kg, providing reliable support to stabilize the body during safe swim training. - All-day wear comfort: lightweight padding with breathable polyester fabric, gentle on sensitive skin for extended wear. - Quick installation: tool-free setup with an ergonomic design and double-arm swim rings to improve balance and deliver a comfortable swimming experience. - Easy, adjustable fit: non-inflatable design with a ready-to-use structure and adjustable buckles for a fast, secure, and comfortable fit. Use scenarios: - In swim lessons for beginners to help maintain proper body position and reduce fatigue during practice. - During family pool time to support stable buoyancy while kids focus on kicking and confidence in the water. - For short training sessions or supervised practice to provide consistent support without complexity.