High quality materials and design - Made from parachute cloth and netting with built-in mesh panels that prevent strings from tangling and help stabilize the chute during training. Resistance and training effect - Provides 5-15 kg of resistance during sprinting to combine speed and strength development in a single workout. Adjustable fit - Adjustable waist belt suitable for athletes of all ages, body types and sizes; easy to fit different shapes. Multi-purpose use - Widely used in sport training; suitable for track and field, running ball games, cycling, skating and other activities; helps increase explosive power, speed and core strength. Use scenarios - On track: sprint speed and acceleration training during team practice. - Ball sports: resisted sprints to improve explosiveness for soccer, basketball, and similar sports. - Cycling or skating: drills to build leg power and core stability.