Whether heading off to one of the great cities of the world or somewhere off the beaten path, Timberland's Treeline Duffel Collection has the ideal bag for your journey. Treeline's wheeled duffels are constructed of abrasion-,tear-, and moisture-resistant 420D Ripstop Nylon fabric, in-line skating wheels, self healing coil zippers, aircraft aluminum handle systems, and TPR handle grips.