The evolutionary version of the consolidated UNO collection is the innovative UNO ZSL PREMIUM, the 4- Wheel product integrates High tech security zip and TSA-lock. UNO ZSL represents the perfect synergy between lightness, elasticity, functionality and aesthetics. It is the result of a detailed research on advanced material technologies to reach the lightest products Roncato ever made, maintaining all characteristics of elasticity and resistance of the Polycarbonate material. The main distinguishing feature of UNO ZSL is its “diamond tips” shell texture, a functional surface developed to obtain fascinating shine. A top-level Made in Italy product with high technological properties combined with a bright modern design.