<p>Multi-directional 8-wheel spinners allow smooth, 360-degree movement over any rough surface for complete mobility free-weight rolling, relieving any pressure from your arms while on the move. Lightweight construction helps you adhere to airline weight restrictions to avoid unneeded airport fees. Expands an additional 2-inches for added packing capacity. High-strength, hardside, diamond-textured, and diamond embossed ABS exterior with a tear-resistant, fully-lined interior. Molded corner guard reinforcements for absorbing and deflecting shock for maximum impact resistance. Features premium, self-repairing coil zippers for long-lasting use and interlocking zipper pullers providing the option to apply your own TSA lock onto your suitcase. Meets most U.S.-based airline carry-on size luggage requirements and fits into most airline overhead bin compartments.</p>