Outside Occasions (TM) Resistance and Sprinting Parachute 56" Diameter, Assorted Colors With FREE Carry Bag! LARGE 56 INCHES DIAMETER: Offers massive resistance of up to 20lbs! The resistance increases gradually as you accelerate! VERSATILE ADJUSTABLE BELT: Fits up to 42" waist, and designed for EASY and QUICK release when running for overspeed training UNSURPASSED RESISTANCE: Delivers massive improvements to acceleration, speed, stamina and strength by recruiting large and new areas of muscle fibers! PARACHUTE MESH PANELS: Provide stability, reduces unwanted shifting during running and prevents tangling during storage RISK-FREE GUARANTEE: If within 30 days of purchase, for whatever reason, you don't like or have an issue with your purchase, just contact us and we will process a 100% money back refund, or an exchange, whichever the situation suits. That's our Promise to you!