Backpack long high: 31*13*44cmThe length and height of the shoulder bag: 19*6*22Pen bag length: 20*10.5Backpack material: high-density nylon fabric, non-toxic and environmentally friendly, easy to clean, waterproof and anti-fouling, anti-collision and anti-scratchCOMFORTABLE: Widened and thickened durable adjustable shoulder straps for enhanced spine protectionLarge capacity: large capacity design, can fill most of the daily necessitiesMysterious style, large capacity, start with this backpack, you must be the coolest guy in the crowd, put it awayProduct Descriptionfeature:1. Material: High-quality environmentally friendly nylon fabric, better feel, waterproof, durable, anti-collision and anti-scratch.2. Structure: The spacious main pocket keeps your daily essentials neatly in the bag.3. Uses: Can be used for daily use, school, weekend travel, outdoor sports, etc.