This listing is for ULTRA HEAVY RESISTANCE CORD. SPEEDSTER® PROGRESSIVE RESISTANCE TRAINER - Use for speed, overspeed and resistance training. With a consistent and progressive stretch, this product offers the highest level of safety and effectiveness for training all levels of athletes. (We include a second standard belt in this package so speed and overspeed training with two athletes is an option.) GUIDELINE FOR CHOOSING PROPER RESISTANCE LEVELS: MEDIUM resistance for Beginner and Intermediate athletes under 110 lbs. (HEAVY for Advanced athletes under 110 lbs.) - HEAVY resistance for Beginner and Intermediate athletes over 110 lbs. (ULTRA HEAVY resistance for advanced athletes over 150 lbs.) Take into account the athlete's age versus weight when ordering. Our Ultra Heavy is approx. 50% more resistance than our Heavy and comparable products from other sources which are typically only offered up to Heavy. THIS PACKAGE INCLUDES: 1 - Speedster Deluxe Dual Use Reversible Padded Waist Belt fits up to 52" waist, 1 - Dual Use Reversible 2" Wide Nylon Swivel Waist Belt fits up to 48" waist, 1 - 8 foot Lightning Cord with Nylon Safety Sleeved Technology - Easily attach to belts, harnesses and anchors with sturdy caribineer clips on each end, 1 - Easy to Grip Tow Handle. Lightning Cords are made with the highest quality premium rubber tubing and completely covered with a durable and protective nylon sleeve to stand up to the rigorous demands of professional and residential use. WORLDWIDE FITNESS PRODUCTS: The principal of this company has been manufacturing, selling and distributing fitness and sports training products for over 20 years. COMPANY MISSION STATEMENT: To offer high quality products and services at a fair price!..Read More