Aluminum Alloy Frame: With its lightweight aluminum alloy frame, this trolley cart is both sturdy and compact, making it ideal for on the go use. The attached Luggage Strap provides additional security, effectively holding the backpack in place during transportation. This feature ensures ease of use and peace of mindIdeal for Backpacks: Our wheeled backpack cart is the great companion for backpacks.Whether you are traveling, going to school, or pulling a luggage bag, cart makes transportation effortlessSturdy Construction: Crafted from pp, the backpack trolley is smooth, strong, and built to withstand everyday use. It comes with four premium wheels that can rotate 360 degrees, ensuring maneuverability and stability Adjustable Height Options: Simply press the button to adjust the height to accommodate different individuals, making it suitable for everyoneBackpack Trolley Base Size: Before making a purchase, please carefully review the available base sizes (12.6x7.9inches) and ensure they meet the requirements of your school bag or luggage. We recommend referring to the picture and size description provided to avoid any size mismatches Specification: Material:PP Size Chart: LxWxH:36cmx28cmx88cm/14.17inchx11.02inchx34.65inch Package Includes: 1Backpack Trolley Wheeled Cart Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.