shock-orbing universal wheel: stable and quiet, the wheel seat is processed with high-density precision bearings and thickened wheel skin, and 360-degree steering ensures smooth driving. TRANSPORT WITH EASE: Featuring a square smooth sliding base and 360-degree swivel wheels, this luggage set easily maneuvers through terminals and any surface, making even the longest journeys a breeze Multi-level adjustment lever: suitable for different heights, adjustable gears, suitable for different heights. The shaking degree is less than 10mm, and the expansion and contraction are smooth. Sturdy and durable: Thickened three-layer composite anti-resistant structure, which is thicker and more expensive than ordinary cabinets. The cabinet is stronger and tougher, and its extrusion resistance is beyond imagination. Sturdy and durable, quick rebound. Practical interior design: The interior of the suitcase provides you with ample space to place any items you need to carry, such as clothes, documents, daily necessities, etc.