Stylish backpack that can hold a 17-inch laptop and features a breathable honeycomb back pad. 【Large Capacity with Easy Expansion】This backpack adopts an innovative expansion design, with a capacity expandable from 25 L to 60 L, equivalent to the capacity of a 24-inch lever box. It can meet your storage needs for daily commutes, short business trips, and long-distance travel. The vacuum compression function makes clothing storage more efficient, easily accommodating 18-20 pieces of spring and autumn clothing. 【Multi-functional Layered Storage】The backpack has a reasonable design with a dry and wet separation zone, a vacuum compression airtight layer, and an independent laptop compartment that can accommodate a 17-inch laptop. The multi-layered storage space keeps items organized, suitable for business and everyday use. 【Vacuum Compression, Convenient and Space-Saving】Designed with the principle of pneumatics, the one-way valve cabin does not require an air extraction pump and can be quickly exhausted by simply pressing, completing the compression process. The vacuum compression function doubles the capacity of the backpack, making it easier to go out. 【Lightweight and Durable, Perfect for Various Scenes】Made of high-quality Oxford fabric, it weighs about 1.55 KG, making it light and durable. The expanded size is 49 x 32 x 20 cm, meeting boarding requirements, eliminating the need for check-in, saving time and providing peace of mind. Suitable for various scenes such as business trips, office use, and travel. 【Safety Design, Thoughtful Details】Equipped with a customs password lock to ensure the safety of your belongings. The dry and wet separation area and independent computer compartment design allow you to classify and store items, making them easy to take out and put in. With a simple and stylish appearance, it offers multiple color options: black, military green, gray, and blue, to meet individual needs. - Color: Gray - Size: Holds a 17-inch laptop - Features: Honeycomb back pad, breathability, cushioning - Storage: Front dry and wet separation storage, vacuum compression storage - Design: Simple and stylish Thank you for viewing. Color...Green系 (Green-based) Stains/Tears...None Accessories...None