Premium Oxford cloth fabric: wear-resistant and scratch-resistant, water-repellent design, and resistant to deformation over long-term use; Large-capacity storage space: multi-layer design for neater organization during travel; Reinforced pull rod + silent universal wheels: smooth push and pull for easy travel; Secure combination lock design: ensures travel safety; Ready to sell out of the box, no assembly required, saving labor; 4-piece set: meets different travel/sales needs and can be freely combined.