The suitcase benefits hugely from its ABS+PC hard plastic shell. it goes through insanely strict quality control test standards, creating strong and sturdy pieces that can withstand any forms of rough handling.Please note this luggage is sold separately, but If you intend to buy two or three suitcases, the small suitcase can be stored inside the bigger one With the included TSA lock, you can make sure your valuables are secure and safe. Quiet airplane spinner wheels and an adjustable 3-level 100%pure aluminum telescoping handle allow you to quickly maneuver in tight spaces and it’s sturdier than most of the telescoping handle on the market. Make packing clothes easy with the fully lined interior and the multi-use organizational pockets. Three different size: Three different size: 20inch (15.4 x 8.7x 22.4), 24innch (17.3 x 9.8 x 26.4) 28inch (20.5 x 11x 30.3), Please note that ONLY 28in is Expandable add 15%to the scalable space. Designed for the modern traveller Made of lightweight and durable PC+ABS material, this luggage is crafted to resist impact. Soft touch top and side carry handles provide maximum comfort while travelling, and an integrated TSA-accepted combination lock will keep your belongings safe. Additional features include an expandable main compartment(28in only) for maximum packing capacity and silent, double spinner wheels. The protective film is not problem Peel off the protective film can be a headache, However, this is not the case this time, the most difficult part had already been peeled off by the factory, like the wheel and handle area, all you need to do is peel off the main body’s protective film. As easy as pie. Features of the luggage 28inch is expandable for up to 15% additional packing capacity; 20inch is perfect carry-on, 24inch is ideal for personal or business trip. Handle: 3-step 100%pure aluminum telescoping handle for comfortable maneuvering. Wheels: four spinner wheels allow the suitcase to move seamlessly through 360 degrees of motion. Interior: The interior is fully lined with multi-use organizational pockets make it easy for packing clothes. TSA Lock: TSA lock for peace of mind. Measures: 20inch (15.4 x 8.7x 22.4), 24innch (17.3 x 9.8 x 26.4) 28inch (20.5 x 11x 30.3)(13in when it is expandable) Capacity: 20in38L , 24in60L, 28in 93L(110L when it is expandable) Weight: 20in 6.7lbs 24in8.1lbs 28in10.8lbs Travel days: 20in1~4days 24in4~7days 28in 7~9days