Delsey Chatelet Air 2.0 has four very handy and silent double wheels. They have been specially designed for a flexible and pleasant grip. Its manufacture has been studied to make your luggage more manageable in order to be able to move wherever you want. There's nothing more convenient than a built-in USB port on top of your suitcase! You can connect your phone to your suitcase and slip your external battery into a small pocket specially provided. Never run out of battery on the go again!