[3-piece suit] A suit consisting of three boxes of 20, 24, and 28 inches, respectively satisfying: boarding, travel, daily storage, and other functions. 20-inch suitcase can be brought on the plane directly without checking it.20inch: 40L 24inch: 64L 28inch: 96L [Larger storage space] We have adopted a more scientific structure design to maximize the use space in the box, and reasonable internal partitions make your luggage more tidy and can accommodate more. [TSA Customs Lock] TSA Customs zipper lock, sturdy and reliable, gives you more peace of mind. When going through customs, you don't have to worry about the box lock being damaged due to brute force detection. (TSA locks do not come with keys) [Stronger material] The golden ratio composite material of ABS+PC is approved to have the coexistence of firmness and flexabilty. [Reliable Warranty] We provide a two-year warranty, you can always contact our after-sales team, we will actively solve the problem for you to your satisfaction.