Large-Capacity Sling Bag: The 18L capacity easily accommodates daily supplies such as clothes, devices, books, water bottles and a 12-inch laptop. Convenient Phone Pocket on Strap: Easily access your phone while you are on the move. The phone pocket can hold up to a 5.5-inch smartphone. Designed For Comfort: Ergonomically designed, the padded shoulder strap, and two-way zippers offer convenience and comfort. The water-resistant material protects your belongings, even from rain. Fluorescent Reflectivity: The fluorescent reflective element keeps you safe at night by making you visible from up to 300 foot away.