Description: INCREASE DRAG RESISTANCE: Everyday swimming strength training resistance parachute makes forward movement more difficult. INCREASES ENDURANCE AND SPEED: Speed increases, and the increased drag provided by a drag parachute, provides a good training effect. NECESSARY TOOLS: The swim training exerciser improves swimming strokes for athletes and beginners who want strength training. It fits butterfly, backstroke, breaststroke, and strokes. VERSATILE TRAINING TOOL: Swimming Pool Parachute can improve the ability of the athlete to accelerate, muscle endurance, improves power, speed, and agility. EASY TO USE: This swimming belt with loop for installation. So you can hang the belt to any pole around the swimming pool. Specification: Material: Nylon and PP Size Chart: Parachute Diameter: 20cm/7.87inch, 30cm/11.81inch, 40cm/15.75inch Parachute strap length: 37.5cm/14.76inch Hook strap width: 2.6cm/1.02inch, length: 197cm/77.56inch Belt length: 115.5cm/45.47inch, and the adjustable range: 28-50cm/11.02-19.69inch Package Includes: 1 swimming parachute Note: Please allow slightly errors due to manual measurement and different monitors.