EUC Meet your new travel buddy. This bag's easy to pack away, converts into three different bags, and has all the storage you need. water-repellent fabric Fabric is water-repellent fabric. Water-repellent features Designed for: On the Move Adjustable straps: Adjust the straps for a custom fit Water bottle pocket: Exterior water bottle pocket for quick access to hydration Device storage: Zippered pocket has an interior sleeve to keep your device safe and secure Internal pockets: Hold your essentials in the internal pockets Travel: Slip pocket trolley strap Dimensions: 28.5cm x 14cm x 41.5cm (11.2" x 5.5" x 16.3") Volume: 21L