STABLE SUPPORT: The foot pads can be used as hooks for stable support and can be used as hooks to prevent damage to the box. The smooth zipper is still smooth after multiple pulling and closing tests. The foot pads can be used as hooks for stable support and hooks to prevent damage to the box. TRINITY COMBINATION LOCK: Multi-country universal three-dimensional combination lock, comfortable handle is soft and durable, very comfortable to use, add a road lock to your uneasy heart to prevent violent unpacking and consignment, and it is embedded in the case shell to prevent accidental cracking of the suitcase. luggage security HIGH-QUALITY TIE ROD MATERIAL: Thick alloy smooth tie rod, high-strength thickened hidden alloy tie rod, stretching and smooth gap, design with slight shaking, strong and wear-resistant, multi-level height adjustment design, shaking degree within 10MM USB CHARGING: Make every slide as light and smooth as a ballet dancer, high-strength rubber material, reduce friction, noise reduction SERVICE：If you have any questions, please feel free to contact us. We will reply you quickly within 24 hours.