Constructed of durable polyester. Connect luggage back-to-back in seconds with Velcro straps. Protective crash-gard wheel housings, skid bars and corner guards provide protection over the long haul. 8-wheel spinners are easy to maneuver with a smooth glide in every direction. External USB port on Carry-on allows you to connect a power bank to charge devices on the go. (Power Bank not included). Telescoping handle has two stops to provide a comfortable roll. Low profile carry handles on top and side with a comfortable grip. Mesh lid pocket. Side mesh pocket to store small items. Adjustable hold down straps keep clothing secure and snug. Built in wet pocket is perfect for storing toiletries or wet items.