The Champion Sports Deluxe Speed Chute is the perfect way to improve your sprint speed, explosiveness, acceleration and lower body strength. Featuring an adjustable waistband with storage pockets, this chute is made of rip-stop nylon fabric, has four shroud lines to minimize tangles, and a quick release strap for easy release. This extra large model is for runners who weigh over 210lbs and offers 50lbs of resistance.