HOPSOOKEN Travel Lightweight Shoulder Backpack Sling Crossbody Bag Hiking School Men Women HIGH QUALITY: waterproof and tear resistant high quality Nylon material, SBS Metal Zipper, as well as the Reinforced stitching, making it even more durable. LARGE CAPACITY: 1 main pouch and 4 small pouches, providing enough space to store your items. Such as iPad, magazine, phone and so on. PORTABLE DESIGN: when dont need to use it, the bag can be easy to fold up into small pocket(Sandwich size), which is convenient to carry or pack without it taking up space. When you use it, it can be expanded into a larger backpack. COMFORT: The shoulder bag can be easily firm on your body through adjusting the Detachable Waist Strap when you running. Its reasonable size (16.9 x 4.7 x 11.4 inches) and lightweight make you always be comfortable wearing it. SALE SUPPORT Our product has strict quality inspection. If there is any quality problem when you get it, please kindly contact us, we will be glad to help you solve the problem. Your satisfaction and love is our best encouragement. Any questions on our customer services , welcome to suggest, thanks.