Description: 【Multifunctional design】: This backpack trolley is designed to carry school bags, backpacks, and more, making it a convenient companion for various outdoor activities 【Quality material】: Crafted from aluminum alloy, this school bag trolley is sturdy and wear resistant, ensuring long time use 【Adjustable features】: The wheeled luggage cart features a 3 sections telescopic handle and a foldable base, allowing you to adjust it as needed for flexible use 【Compact size】: With a base size of 28cmx20cmx7cm/11.02inchx7.87inchx2.76inch, this foldable hand trolley boasts a compact structure that is sturdy yet lightweight, making it an ideal gift for both boys and girls 【Versatile applications】: Great for school, traveling, camping, picnics, shopping, fishing, and more; this rolling backpack adapts to various scenarios with ease Specification: Material: Aluminum Alloy Size Chart: Base Size: 28cmx20cmx7cm/11.02inchx7.87inchx2.76inch 1 Section Length: 50cm/19.69inch 2 Section Length: 73cm/28.74inch 3 Section Length: 92cm/36.22inch Wheel Diameter: 11.5cm/4.53inch Package Includes: 1 Backpack Trolley Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.