MARK RYDEN Rolltop Backpack with 3-Size-Technology, 15.6" Laptop Compartment, Water-Resistant, Compass, RFID-Blocking for Work, School, Travel, and Sports. Perfect for Men and Women.

"【Variable size】 Large capacity. This backpack has multiple buckles that are free to adjust the size. The minimum size is 6L and the maximum size is 26L, enough space to meet your needs. Whether for daily use or short-distance commuting. 【Comfortable to carry】 Made of high-quality waterproof nylon fabric and polyester fabric, which is more durable and lighter, and the back and straps are made of breathable sponge fabric, which means it is more comfortable to carry, reduces the weight of the bag, and relieves stress from your shoulders making it the best choice for daily and outdoor use. 【Multiple pockets】 Built-in large main pocket, 1 internal pocket with 15.6-inch laptop attachment strap and iPad pocket, two small pockets can store small items, Velcro has 1 front pocket and one with RFID theft protection pocket to protect your credit card and 1 side pocket for water bottle. 【USB charging port】 External USB port with built-in charging cable makes charging convenient and easy. 【Wide Occasion】 The backpack is suitable for daily walks, day trips, vacations, travel, hiking, school, camping, etc., also a good gift."