The Life Fitness Core Bags are excellent for multifunctional compound strength training and conditioning. Commonly used for front squats, upright row, clean and press, tricep extensions, Russian twists, as well as lunges, squats, and presses in a functional circuit. Core bags have several handles that make them easy to use for a wide variety of exercises. Shown with Axiom Vertical Medicine Ball Storage rack. *Rack sold separately* Outside Material Double-stitched vinyl Inside Material Foam Grab Handles 3 Warranty 1 Year