Designed to mimic the gentle ripples of sand dunes, the Dune hardside 21.5" carry-on luggage is the latest addition to Tracker. Crafted from durable, scratch-resistant polycarbonate, the Dune luggage inspires a natural resilience only seen in in the landscapes of arid deserts. Finished with an efficient storage system, a secure TSA-lock, and an 8-wheel spinner system, the Dune luggage invites you to explore new horizons.?