An expandable backpack is a versatile bag designed to increase its storage capacity when needed. It typically features zippers or folds that allow the user to expand the bag's size, making it ideal for carrying extra items during travel, school, or outdoor activities. This adaptability helps users manage varying loads without needing multiple bags. These backpacks often come with multiple compartments and pockets, providing organized storage for essentials like laptops, books, and personal items. Many models are made from durable materials, ensuring they can withstand daily wear and tear while remaining lightweight and comfortable to carry.