【Hard shell luggage】This boarding travel suitcase is made of high-strength ABS+PC material, with high-quality aluminum alloy pull rods and 4 high-strength bearing universal wheels at the bottom. It is ultra quiet and very durable. 【20 inch boarding capacity】With a size of 20 inches, international flights allow you to carry it with you without checking in. You can easily carry it with you and retrieve your belongings anytime, anywhere. 【 Expandable/Foldable Luggage 】This suitcase is foldable, expandable, and has a variable volume, which can accommodate your daily needs. If you have less luggage, it can also be compressed, bringing great convenience to your travel. 【Travel suitcase information】52 * 36 * 23cm, weight 2.1kg, capacity 45L, size: 20 inches, pull rod: 3 adjustable sections. After folding, the thickness is only 7cm, which is very lightweight. 【Security and anti-theft password lock】The zipper is equipped with an anti-theft password lock, ensuring the safety of your items, so you can use it with confidence. 【Ultra quiet universal wheel】 Ultra quiet universal wheel, with a sound of only 0-5 decibels when sliding, very quiet. The rotating part adopts high-strength bearings, which are durable.