SPEED & AGILITY RESISTANCE SET: ffer up t 80 lbs resistance strength fr applying resistance t agility and strength eercises. It is 16 ft unstretched and 50 ft fully stretched.Adjustable strap increasing cmfrt during mvement, nt easy t slip,and adjustable waist belt is equipped with a ring s that yu can d a 360 degrees eercise mtin giving yu better mbility while nting, jumping, and twisting. MAIMIZE YUR PWER:The resistance trainer is used by athletes all ver the wrld wh want t becme faster, strnger, and quicker runners. It can als helps athletes train t maimize strength, speed, and vertical jump, s that they can becme their best. VERSATILE TRAINING: Ideal fr all athletes and active peple persnal r team eercises t enhance leg, calf, back, chest, shulder and cre strength. Great fr ftball players, runners, crssfit practitiners and basketball trainers. BEST WAY T USE: It is recmmended that the athlete uses a partner t indeed make the prcess a challenge by applying the resistance.Individual training is als pssible by cnnecting it t a stable grunded bject. TRAINING EPLSIVE FRCE AND SPEED: Run faster, jump higher and dig harder with resistance Trainer that builds speed, strength, agility , fleibility,dynamic pwer and verall balance.Build strength and eplsive frce as yu yur physical skill t the net level.