Waterproof material: Bange laptop backpack made of high-density coated oxford fabric not only waterproof but also scratch-resistant,waterproof material can protect your goods in rain day Multi-function pocket:The front pocket can hold daily needs such as key ,cellphone,wallet and so on,the main pocket can contain 5-6pcs clothes suitable as overnight backpack or business trip bag,Laptop compartment can hold 15.6 inch laptop and 9.7 inch IPad ,rationally divided pocket protect your electronic products,Two side pocket can hold your power bank ,umbrella,bottle etc