The Rip Trainer employs an innovative resistance cord system to create a variable, unbalanced load that enables you to develop core strength, explosive power, flexibility and endurance The Rip Trainer is easily portable and can be used by virtually anyone anywhere by attaching it to any secure anchor point The Rip trainer comes standard with a medium resistance Rip Cord The Rip Group Training Station is made of high-grade steel and accommodates up to 10 users, indoors or outdoors and includes wheels for easy portability (Rip trainers not included)