The HEYS 4WD® 4 wheel Spinner is made from a Acrylonitrile Butadiene Styrene (ABS) and uses Japanese made wheels. Acrylonitrile Butadiene Styrene (ABS) is both durable and flexible so that when under stress, it flexes to absorb the impact and then afterwards flexes back to its original shape. Another great feature on the HEYS 4WD® Metallica is its expandability, one of the few hard-sided luggage that can expand for up to 25% more space. The HEYS 4WD® utilizes wheels that are specially made in Japan. These wheels allow for smooth fluid motion and effortless gliding on any surface. Features include a push-button telescopic handle system, plus a fully lined interior with a divider. This is the world's lightest spinner luggage meaning that now with the airlines becoming more restrictive on allowable weight, this lightweight luggage set is the best choice, allows you to pack more. 7 Year Worldwide ‘Better Life’ Warranty. Dimensions: 30” x 20” x 12”.