Oversized 40L-50L travel backpack, expandable laptop bag, waterproof bag, compatible with 17.3-inch laptops, business backpack

Scalability and Extra Large Capacity: This large travel backpack can expand by 5 centimeters, increasing its capacity to 40L-50 liters. Whether it's clothes, cosmetics, camera equipment, or other travel essentials, this extra large travel backpack can meet all your needs.

This travel backpack is made of waterproof material, ensuring the safety and dryness of your belongings in light rain. It is ideal for outdoor activities. There is also an anti-theft pocket on the back of the backpack, where you can store important documents such as passports and ID cards.

This men's travel backpack is designed to meet airline requirements, allowing it to unfold from 90-180° for quick and safe inspection. The luggage strap on the back is designed to fit the handle of luggage, making it convenient for international travel.

This men's aircraft travel backpack is equipped with a padded adjustable shoulder strap and 2 padded handles, allowing you to easily transform this travel backpack from a handbag into a backpack. The top and sides of this personal item travel backpack feature two padded handles, making it convenient to carry at any time.