Wheelie Sub True Black. Like a walk in closet with wheels, the Burton Wheelie Sub is perfect for month-long odysseys (or just really heavy packers). Volume-enhancing CRAM™ stretch zipper zones mean room for packing extra everything. Beat the luggage scale with the Double Down™ feature, which lets you separate the bag in half to try and beat overweight charges. IXION™ skate wheels are built to tackle any terrain, while Sn