Customizable learning companion: Detachable buoyancy blocks and EVA padding provide buoyancy-adjustable support for different swimming levels, adapting to each child. Adjustable fit: The adjustable strap with flexible buckles fits every body shape, ensuring reliable hold and freedom of movement during swim lessons. Individualized support: The kids swim belt enhances water acclimation with flexible safety, builds confidence, and offers protection in the water. Practical design: The belt delivers secure hold and adaptability during training, helping children enjoy water with peace of mind. Use scenarios - Gentle water introduction in a shallow pool: adjust buoyancy with removable blocks for comfortable floating and safety with supervision. - Progressive swim lessons: fine tune buoyancy as skills grow, maintaining secure fit while practicing kicking and strokes. - Family pool or beach time: reliable hold and easy adjustability for supervised water play and confidence building.