AGPTEK 56 inch Speed Training Resistance Parachute Running Chute Power (Large) 56" diameter, 25-35 lbs of resistance. Also available in Medium (48") and Large (56") Fits all sizes (up to a 42" waist), Quick Release for overspeed training. Fully functional unit includes parachute and belt. It can help you to practice muscel endurance e, acceleration and running speed. Our drogue chute with an easy-to-carry bag is storable and portable, so that users can bring it everywhere. One parachute is better for long-distance running. You can add two or more chute to increace resistance.