High-quality material: The hose is made of latex, which is environmentally friendly, odorless, flexible, safe and reliable, with suitable width, comfortable and durable, and does not hurt the skin. Easy to install and use: Our swim harness has a loop that you can attach to any static swim pole. With a length of 4 m, you can perform various workouts. The swim belt easily adjusts to fit both children and adults. Swimming resistance band features: The swimming band is a training tool for all swimming styles to increase strength. It has high tensile strength, resistance to fracture and excellent toughness. It supports training for forward acceleration and muscular endurance. Swimming training kit: Specifically designed for swimming resistance training, this kit includes a 4m swimming bungee cord, swim belt, and mesh bag for convenient storage. Ideal for comfortable swim practice anywhere. Suitable for all users: adults, children, and beginners. Can be used as a static swim belt, progressive swim trainer, or water jogging belt. Also suitable as a children's swim aid or adult swim belt. Color: blue