Free duffle (#3856)with the purchase of 2 uprights. Dakota MTX is the new dimension in travel.It offers unparalleled flexibility and versatility because it allows you to add and subtract packing capacity as you need to.Each piece is made from ultra-tough ballistic weave nylon and features exclusive functional details.Aircraft-grade aluminum telescoping handles and super-strong,oversized premium wheels-that make getting there a little easier.Lifetime gurantee with free shipping.