Thank you for viewing! [Expandable, 3-Stage Adjustable Pull Bar] With a zipper type, you can increase the capacity by 20% just by expanding the gusset width by 5cm. You can rest assured even if you have more souvenirs on your trip. The lightweight and sturdy aluminum alloy caliber can be adjusted in multiple stages to suit your height and usage scene with a single push of a button. [Removable, Brake-Equipped Shock-Absorbing Casters] Silent, durable dual-wheel casters provide smooth gliding while also allowing 360-degree free rotation. Because special soundproofing material is used, the rattling noise is reduced by about 30% compared to ordinary casters! [High-Quality Body & Reliable YKK Zippers] ABS resin is lightweight, elastic, and resistant to cracking, while PC (polycarbonate) resin excels in impact resistance and insulation. A durable, high-quality hard-type body is achieved by mixing both materials. [World-Standard Safety] Equipped with a TSA dial lock, which is essential for overseas travel, making your outings safer. *The key is for airline inspection only and is not included with this product. $$6780