The trolley suitcase is made of better material ABS+PC, it features a main compartment for clothing, shoes, toiletries etc and a front pocket for laptop(suggested laptop size 15.6 inches and under), tablet, magazines, documents or other electronics etc. The built-in USB charging port design allows your mobile phone and other devices to be charged randomly at any time without opening the luggage. USB charging port makes trips more convenient. NOTE: USB port does NOT charge on it's own, you need to supply a power bank(NOT INCLUDED).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.