Why Should Take This Backpack? With a USB 2.0 Charging Port,Earphone Hole,Reflective Tapes,Various Pockets and Water-resistant Materials,this is an ideal multi-functional durable backpack for the daily commute or business travel,or used as a school bag. This backpack with well padded built-in laptop & tablet PC sleeves protects your devices very well on the go,also provides fashion style and functional organization for everyday use. Creative Design -USB 2.0 Charging Port extened out provides more convenience to charge your phone,tablet PC. -Earphone hole lets you enjoy music more easily. -Reflective Tapes create 360 degrees of reflectivity for more safety in night. -Anti-pocket are for your valuables,like wallet,watch. -Luggage Strap firmly fixed over trolley suitcase on travel. -Card Pockets on shoulder straps,providing more comfort when shopping. -Water-resistant Lightweight & Duarable. Well Constructed -Material: High quality Nylon. -3 x multi-compartment design,more than 15 various pockets. -Accessory Compartment: Pen Pockets,Phone Pocket & Card Slots. -Storage Compartment: Very roomy for big items like clothes,books,Built-in USB cable,Big mesh pocket. -Laptop Compartment: Well padded laptop & tablet PC sleeves with velcro fixed strap. -Back Compartment: Airflow design with thick foam padding,Anti-pocket. -Side Pockets: Pefect combination of zipper & elastic accesses. -Shoulder Straps: Soft padding,very sturdy and adjustable for carrying in comfort. Sizes -Exterior:47x33x17CM/18.5x13.8x6.7Inch,Laptop compartment:45x30CM/17.7x11.8Inch Fits most up to 17.3 inch Laptops,but may not snugly fit some models. Weight:1KG/2.2lb Gender:Unisex Application:Business/Travel/College/Casual/Sport/Outdoor/Hiking/cycling. Package: 1x Backpack,NOT including other items,like power bank