Air resistance training parachute Perfect for improving your muscles: Head to the point of facing out wind, and use air resistance to increase the strength of your running naturally. Improve explosive power, durability and power while running in track and fields, soccer, futsal, basketball, and more. Color: Black; Material: Polyester; Size: 57.1 x 57.1 inches (145 x 145 cm); Weight: Approx. 7.1 oz (200 g); Resistance: 11.2 - 35.4 lbs (5 - 15 kg); Applicable Size: Waist: 27.6 - 35.4 inches (70 - 90 cm); Velcro so you can add or decrease a little more); Resistance Parachute for training