Made of durable, water-resistant, and fashionable two-tone nylon fabric, this lightweight slim case features an Anti-Shock System ® that protects PCs up to 13.1". It also comes with a built in inner sleeve, featuring Tucano's exclusive Anti-Slip System®, that locks the laptop inside the bag, for extra protection. Work-out Expanded is designed as a slim bag, but it can provide extra storage thanks to an expandable zippered front pocket. It can be used as a sleeve thanks to its flexible tuck-away handles. Its back pocket becomes a pass-through, to conveniently complement Workout Trolley. Comfortable ergonomic shoulder strap with snap hook, for optional over the shoulder use.