Music Theme Patterns:Cute piano musical notes print style and distinctive high music note zippered Materials :High quality waterproof oxford cloth ,smooth durable and easy to clean Size: 43.5cm*30cm*15cm (17.1inch*11.8inch*5.9inch) Classic and simple design:Two convenient side water bottle pockets,two front pocket , for storing some small things and stability,adjustable padded back and thicken breathable shoulder straps ultra comfort Multifunctional Backpack:It's a great fashion backpack for daily life,school,college,or any other outdoor activities etc