Science Fiction Stars ã€Material Description】Polyester fiber (100% polyester) ã€Product Performance】This high-quality large-capacity backpack comes with a USB data cable and music jack, which allows you to listen to music and charge in one step. Multi-space pockets: The main pocket can hold books, documents or clothes, etc., and the independent computer compartment can hold a 13-16-inch laptop or IPAD. Comfortable and sturdy: Comfortable airflow back design, thick and soft. Multi-sided ventilation lining panels provide you with maximum back support. Breathable and adjustable shoulder straps relieve shoulder pressure. The foam padded top handle is sturdy and there is a hidden zippered anti-theft pocket on the back for important items such as wallets. The mesh pockets on both sides of the bag can store small items such as umbrellas and water bottles. The design of the details reflects its powerful functions: glasses can be hung on one side of the shoulder strap, and a small pocket on the other side can be inserted for pens or keys. Adjustable straps are provided on both sides of the bag to tighten and reinforce the bag. There is also a suitcase tie-down strap on the back to provide convenience for your travel. Applicable scenarios Going to school, daily travel, business trips, work, hiking, camping, etc. Accessory structure There are 12 pockets in total. One main pocket with a divider pocket inside. One front pocket with two patch pockets and two small pockets for pens. There is a pocket in the front. There is a pocket on each side. There is a pocket on the back. There is a small pocket on the shoulder strap. There are two USB ports on the left side, which contain two data cables for charging and listening to music. There is a strap on the back that can be hung on the suitcase. There is a breathable soothing air cushion on the back to relieve pressure. Washing instructions It is recommended to hand wash or wipe with a damp cloth, do not bleach