This 33 liter Koolatron cooler can be used in the vertical or horizontal position. With all of the "works" are in one portion of the lid and the luggage space is maximized when transported in the "chest" position. Our 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 of the Koolatron cooler for a very comfortable life.