Thank you for viewing! 【Expandable with 3-Stage Adjustable Pull Bar】 With a zipper, 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 scenario with a single push of a button. 【Removable, Brake-Equipped Shock-Absorbing Casters】 These dual-wheel casters are quiet and durable, providing smooth gliding while also allowing for 360-degree free rotation. Because special soundproofing material is used, the rattling sound 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. This results in a durable, high-quality hard-type body that combines both materials. 【World-Standard Safety】 Equipped with a TSA dial lock, essential for overseas travel, making your outings safer. *The key is for airline inspection only and is not included with this product. $$6580