This 33 liter Koolatron cooler can be used in the vertical or horizontal position. Since all of the "works" are in one portion of the lid, luggage space is maximized when transported in the "chest" position. The two piece lid design allows you to open the entire top for easy loading or one light-weight portion while on the go. The KOOL WHEELER features wheels and a unique extendable, folding, handle.