EXPANDABLE AND LARGE CAPACITY: Empsign Women's laptop backpack has a unique expandable feature that gives you additional packing capacity. The backpack features a spacious main compartment, as well as a dedicated laptop compartment. The main compartment is perfect for storing keys, clothes, cameras, umbrellas, etc., perfect for travel enthusiasts. This versatile backpack meets the airline's personal item requirements, facilitates airport security and is conveniently placed under the seat. DURABLE AND USB DESIGN: The laptop backpack is made of waterproof polyester and scratch-resistant materials, while the backpack has good air permeability and heat dissipation, making the backpack more comfortable. Sturdy zipper and sturdy stitching that can withstand the demands of travel. Backpack peripheral USB interface, easy to charge anytime and anywhere, comes with USB charging cable. (Excluding mobile power supply) MULTIFUNCTIONAL COMPARTMENT: Accordion storage design divides the briefcase into 3 main compartments, providing separate space for your 15.6" laptop and all your belongings. The built-in padded laptop section and tablet section protect your device from scratches. The overnight section helps organize clothing and household items. The front stationery section organizes your documents and other small items. The zippered pockets on both sides can hold your umbrella, water bottle, etc. RFID POCKET: Inserting an electronic card into the RFID blocking pocket can stop theft and electronic pickpocketing and keep your information safe inside your briefcase. MULTI-PURPOSE: EMPSIGN rolling briefcase is suitable for overnight stays, commuting, business trips, impromptu trips and road trips. It can be a great gift for family, friends, partners and spouses if he or she is looking for a practical, high quality, professional rolling work bag.