From the Trek NXT Collection. Designed in rugged ABS material that is able to withstand the rigors of travel with extra expansion that allows you to easily pack all your belongings. Four dual, airflow spinner wheels so you can easily roll an upright case. Kissing zipper pulls fit together so you have the option of adding on a lock. One oversized packing space divides into two distinct, large compartments for a customized packing experience. Light interior makes it easy to see the items inside the bag.