- Innovative design for precise buoyancy and alignment: 15 cm tall, 5 cm thick high density foam provides scientifically distributed buoyancy, keeping the body properly aligned in the water. Anatomically shaped to fit the waist and stomach for stable, even floating. - Adjustable training solution: snap connection system allows easy addition or removal of modules, giving accurate buoyancy adjustments to match different training intensities and goals. - Breathable safety and mobility: non-slip ribs and perforating airflow channels maintain steady positioning while allowing airflow, helping instructors demonstrate buoyancy skills without restricting movement. - Portable and compact: modular, travel-friendly construction with a waterproof storage bag. Individually packaged components minimize bulk, and quick-dry lightweight fabric enhances comfort and hygiene between uses. - Practical use scenarios: - Swim technique drills in training sessions where buoyancy needs to be tuned to refine body position and balance. - Instructor demonstrations of buoyancy concepts and skill progression without compromising mobility. - Travel or gym workouts where compact, modular components and quick-dry fabric simplify packing and cleaning. - Key attributes: adult swim belt, anatomically shaped for torso fit, high density foam for reliable buoyancy, adjustable via snap modules, breathable with non-slip ribs and airflow channels, waterproof storage bag, lightweight and quick-dry.