This set's impact-resistant polypropylene material offers a flexible and durable exterior that withstands the rigors of travel. It includes a 30"" upright, a 22"" carry-on, and 2 packing cubes. Featuring compression straps and interior pockets for various organization needs. Expandable by up to 20% more packing space and the 8-wheel double spinner system and telescopic handle provides ultra-smooth maneuverability.