Suitcase S Size Carry-on Aluminum Frame Type Carry Case Carry Bag Shockproof TSA Lock Ultra-lightweight Large Capacity Silent Double Caster 360-degree Rotation Stylish Travel Business Trip School Trip 1 piece L31B Color: Silver Size: S size (40L/Carry-on) [Shock-resistant Material & Anti-theft] ① The suitcase case uses high-grade ABS+PC material, a three-layer composite pressure-resistant plate with reinforced strength, and an aluminum alloy frame, forming a strong and durable case. The four corners of the edges are protected by aluminum alloy corners and firmly fixed with 7 rivets. In addition, the box body is processed using thread-drawing technology, which has the characteristics of scratch resistance and abrasion resistance. ② Aluminum alloy frame type suitcases are excellent in waterproofness and stain resistance. In addition, the opening and closing method of the aluminum alloy frame structure is superior in terms of safety and theft prevention. [Two Dial-type TSA Locks] The suitcase uses a world-standard dial-type TSA lock, which is essential for overseas travel, making it safer and more convenient. *This type of TSA lock is a dial type. There is a keyhole, but no key is included. The keyhole is for airport staff. [Multi-stage Telescopic Handle & 360° Silent Casters] Using a thicker aluminum alloy tie rod, the height can be adjusted by pressing a button, and it can be used at your preferred height. In addition, it is equipped with high-quality casters that are quiet and durable, can rotate freely 360 degrees, and have excellent stability when turning or traveling on rough roads. [Size Information] S size: 36.5 x 22.5 x 55 cm, total of three sides: 112 cm, carry-on allowed. Capacity: 40 L, accommodation standard: 1-3 nights. M size: 39 x 23 x 57.5 cm. Capacity: 50 L, accommodation standard: 3-5 nights. L size: 41 x 25.5 x 62 cm. Capacity: 60 L, accommodation standard: 5-7 nights. XL size: 42 x 25.5 x 67.5 cm. Capacity: 70 L, accommodation standard: 7-9 nights. XXL size: 45 x 26 x 73 cm. Capacity: 80 L, accommodation standard: 9-12 nights. *The outer dimensions of the product exclude the top and side handles, side fixed legs, and caster marks. Please note that there may be slight errors in the dimension measurements.