Stackable adjustable resistance featuring the Bodylastics quick clip system. Over 100 levels of resistance from 3 to 404 lbs. of tension * Highest quality components and materials. Heavy Duty Components and continuous dipped malaysian latex - more latex per tube means more resistance for your money * 99% snap resistant bands with Failsafe anti-snap technology - workout with confidence! * 6 months FREE access to LIVEEXERCISE. Over 1800 Live and On Demand workouts every week for muscle building, abs development, body toning, cardio and sports.