UnderCover Swing Case 21-24 GMC Hummer EV Passenger Model SC106PUnderCover Swing Case 21 24 GMC Hummer EV Passenger Model SC106P SwingCase by UnderCover is the most innovative and versatile truck storage box ever made. Built to last from lightweight, high impact ABS plastic; the tough, weatherproof, SwingCase is custom fitted for your truck. The SwingCase is affordable, too. In fact, you can purchase two SwingCases for less than the price of an old fashioned truck bed box and save a lot of space, too. Best of all,