The TriggerPoint GRID Caps & Strap Foam Roller Gym Bag Kit transforms any TriggerPoint hollow-core foam roller into a gym bag. Two easy-to-open caps fit on either end of the roller, creating secure storage for gym necessities. A durable strap attaches on each end, and adjusts to fit comfortably over the shoulder, making it easy to transport the foam roller gym bag. The TriggerPoint GRID Caps & Strap Foam Roller Gym Bag Kit is compatible only with TriggerPoint's hollow-core foam rollers including GRID, GRID2.0, GRID X, CHARGE and CARBON foam rollers. Includes a 4-foot adjustable strap, and two foam roller end caps, each measuring 5 inches in diameter, and 3 inches in height, with a total weight of 1 pound..