Features: brand new and high quality The backpack trolley is-made of high-quality aluminum alloy material, strong and durable. 43/66/90cm, 3 levels of height adjustment, one-click stretch. The trolley is-ideal for kids school bags. The foldable 2 wheels trolley cart for school bags is-ideal for children school bag. Whether on level ground or stairs. Effectively free the shoulders and spine of children. An ideal-gift for children, the stylish-backpack trolley is-perfect for travel, school and excursions. Specifications: Material: Aluminum Alloy Size: approx 43x27x20cm/16.93x10.63x7.87 inches(foldable) Type: black 2-wheel flash/black 2-wheel crystal/rose red 2-wheel flash/rose red 2-wheel crystal Package Includes: 1x Backpack Trolley note: Please allow 1-2cm errors due to manual measurement. Due to the difference betweeen different monitors,the pic may not reflect the actual color of the item.