This listing is for MEDIUM RESISTANCE CORDS. SPEEDSTER SKY LEAPERTM Develops: Explosive jumping thrust, Strengthen stabilization muscles, Proper technique with resistance, Trains the lower body to develop explosiveness and strength, which creates a higher vertical jump and faster explosion off the ground. Performing repeated quick jumps trains the muscles to react faster. SKY LEAPER PACKAGE INCLUDES: 1 - Deluxe Padded Waist Belt fits up to 48 inch waist, 2 - Lightning Cords with Nylon Safety Sleeved Technology. 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. Made with the highest quality premium rubber completely covered with a durable and protective nylon sleeve to stand up to the rigorous demands of professional and residential use. The NEW Generation of Resistance Cords! 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!
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