TRX Training RIP Trainer Basic Kit, Essential for Strengthening the Core AN ESSENTIAL TOOL FOR CORE STRENGTH: The Rip Trainer employs an innovative resistance cord system to create a variable, unbalanced load that enables you to develop core strength, explosive rotational power, flexibility and endurance. INCLUDES EVERYTHING YOU NEED: Includes the TRX Rip Trainer, medium resistance bungee, door anchor, safety strap and 25 page Rip Booklet, 20-minute Rip Training basics digital download. DELIVERS FAST & EFFECTIVE TRAINING RESULTS: Get a full-body workout with just one, easy to set up piece of equipment. BURN CALORIES & INCREASE CARDIOVASCULAR ENDURANCE: Get fast, fun, effective workouts and develop rotational strength that mirrors the way you move in sport and in life. THE TRX MANIFESTO: As the leaders in functional training, we aim empower you in your pursuit of better. We've developed the world's best training equipment, workout programs, and education courses to help you achieve a better version of yourself.