Check the listing for details. Navy Blue PP 5-in-1 Trolley Case Set 12-28in, Non-TSA Lock, Polypropylene. Condition: New. Listed at 157.59 USD. Introducing our premium 5-piece luggage set, expertly crafted from durable and lightweight PP material for lasting travel performance. Durable PP Material & Lightweight Build: Constructed from high-quality, impact-resistant PP (Polypropylene) material, these suitcases are built to withstand the rigors of travel while protecting your belongings.