Feature●The backpack trolley is-made of high-quality aluminum alloy material, strong and durable.●Size: approx 43x27x19cm/16.93x10.63x7.48(foldable), 3 levels of height adjustment, one-click stretch.●6 wheels roll on the stairs fluently, saving energy●Whether on level ground or stairs. Effectively free the shoulders and spine●An ideal-gift, the stylish-backpack trolley is-perfect for travel and excursions.Description Material: Aluminum AlloySize: approx 43x27x19cm/16.93x10.63x7.48(foldable)Type: 6-wheel crystal-wheel dark blue/6-wheel crystal-wheel rose red/6-wheel blue rubber wheel/6-wheel tricolor-wheel rose red/6-wheel crystal-wheel bluePackage Includes:1x Backpack Trolley