Safe buoyancy support: Provides buoyancy that reduces drowning risk, helps maintain a stable core elevation, and aids balance to help users build water confidence naturally. Sturdy material: Made from soft EVA for comfortable wear with no friction. Features a waterresistant outer layer and a tearresistant construction to support safe and enjoyable water workouts. Wide compatibility: Enables childadult compatibility, supporting family practice and teaching needs while offering adaptable and versatile use for swimmers. Easy to operate: Lightweight frame with a quickrelease buckle for simple securing and removal during various activities without compromising stability or functionality. Use scenarios Pool learning with children: Ideal for beginners or teaching sessions where slower introductions to buoyancy and balance help kids gain confidence while practicing kicks, breathing, and simple strokes under supervision. Adult water workouts and balance training: Provides stable buoyancy for balancefocused exercises, gentle leg lifts, and lowimpact cardio in the pool, aiding steady progression and comfortable movement. Family practice and lessons: Allows quick size changes for different users during group practice or lessons, enabling seamless handoffs between children and adults without sacrificing stability.