LumiFrame Carry Case - Cabin Size, Checked Suitcase, Large Trolley Case, Lightweight Carry Bag, Silent Double Casters, Impact Resistant, Travel, Business Trip, TSA Lock with Protective Cover, Silver, M-22inch Size, 3 Nights 4 Days, 50L 【Material】1. The surface material uses a three-layer structure of PC polycarbonate resin + ABS material, which is lightweight yet highly impact-resistant. The popular aluminum frame is used, making it suitable for both business and casual settings. It is stylish and large enough for domestic travel and business trips. 2. Frame: Aluminum. Lightweight and easy to carry. Colors and design suitable for both women and men. M-22inch size has a capacity of 50 liters. 【Lock】Equipped with an international TSA lock. (The keyhole is for airport staff only. The key is for customs clearance and is not provided to the purchaser.) 【360° Rotating Casters】All wheels are 360° rotating silent casters. The casters use TPE, a next-generation material with excellent abrasion resistance and durability. TPE is a flexible and soft material, providing excellent shock absorption and reducing noise during travel. The casters rotate 360° and are strong against steps and cobblestones, using large-sized wheels that roll easily with little force. 【Multi-Stage Carry Bar】The suitcase can freely adjust its length according to height and situation. Adjust the height that suits you with a button. Perfectly suitable for both ladies and men.