Wheel: The quality of the wheel directly affects the experience of the suitcase. High-quality wheels should be smooth, silent, and wear-resistant, preferably universal wheels, so that they can rotate 360 ​​degrees during walking, making it easy to drag. For example, some high-end suitcases use TPE silent universal wheels that are not only flexible in movement, but also keep noise low on various road surfaces.
Trolley: The pulley should be sturdy and durable, with smooth telescopicity, and it is best to have multiple adjustment functions to suit people of different heights. At the same time, the material of the tie rod is also very important, and the general aluminum alloy tie rod quality is better.
Lock: In order to ensure the safety of luggage, locks in the suitcase are essential. Common ones include ordinary password locks and TSA customs locks. If you often need to travel abroad, it is recommended to choose a suitcase with a TSA customs lock, so that during customs inspection, staff can use a dedicated key to open the suitcase without damaging the lock.
Internal structure: A reasonable internal structure can improve the space utilization of the suitcase. Some suitcases will be equipped with multiple compartments, zipper bags and laces inside to facilitate sorting and storing items and preventing them from shaking in the suitcase.