Both pieces of luggage come with the newly designed split spherical wheels. These wheels give you the ability to effortlessly roll over uneven and rough surfaces with very little effort. The pull handle is textured and gel-infused so you will have a very comfortable grip when pushing or pulling these bags along to your next destination. The exterior is made from a SamGuard tri-core nylon which is strong and lightweight with a water-resistant barrier to keep your contents dry.The interior of the luggage is fully featured and has many pockets to help organize your things. It includes a WetPak. mesh. and modesty pockets so you can pack your smaller items and find them easily at a later time. The 25" spinner has a removable tri-fold suiter to hold your formal attire and keep it wrinkle-free.It also has an expandable feature to holod those extra items that you may have picked up from your trip. The bottom corners are rubberized and textured so they will be protected fropm those critical points during your travels.