Material: They are often made from waterproof or water-resistant materials like Oxford cloth or nylon.
Storage: The backpacks generally have a large capacity (ranging from approximately 20L to 45L), including a padded compartment for a laptop (fitting up to 16 or 17 inches, sometimes 18 inches), a main compartment for other items, and multiple interior and exterior pockets for organization.
Security & Convenience: Many models in this style include features like anti-theft designs with a number locking system and a built-in USB charging port for on-the-go device charging. They also often have padded shoulder straps and a luggage pass-through strap for easy carrying during travel.