【Ideal for full-body training Durable training tube】 Design your own resistance gym with TRNR Strength Tube X. The Strength Tube X is built to allow you to stack resistance to suit your personal needs. It features a heavy-duty carabiner that provides excellent durability and a multi-layer processed natural rubber latex. Our innovative strings, strategically placed in the center of the tube, prevent stretching beyond the maximum stretching capacity and prevent premature breakage. Please note: Other TRNR X-Series components (Strength Handle X, Ankle Strap X, Strength Bar X, Door Anchor X, Outdoor Anchor X) are sold separately.