Aqua Lung Explorer Collection: Mesh RollerThis mesh roller's quarter frame and wheel set makes hauling gear up and down dock ramps at low tide a little easier: the two top handles are designed for easy lifting from a boat or vehicle, and they are mounted vertically to position the bag to the side and prevent it from hitting your heels while walking. Features: Easy to Transport. Wheels are mounted vertically and positioned such that the bag wont hit your heels while pulling it behind you.