A mobile cooler chest is constructed with a pair of ground-engaging wheels supporting one end of the chest. A U-shaped towing handle is pivotally mounted upon the opposite end of the chest for movement between a projecting towing position and a downwardly projecting standing position in which the handle supports the chest, in cooperation with the wheels, in a stationary, level position. The handle is provided with a releasable latch operable to lock the handle in either of its towing or standing positions present. A second embodiment of the mobile cooler chest comprises a lid on the cooler chest with a first chest having a lid and a bottom wall. A mating projection and groove is formed on the first chest bottom wall and cooler chest lid, for nestingly mounting the first chest to the cooler chest. A second chest has a bottom wall, with a mating perimeter bead and complementarily shaped projection formed on the second chest bottom wall and first chest lid, for nestingly mounting the second chest to the first chest. A third embodiment of the present invention comprises a cooler chest support having a support member with a first end and second end. An axle is mounted on the first end with a wheel rotatably mounted on the axle. A pull handle is connected to the second end, for pulling the cooler chest support. L-shaped brackets are mounted on the first end of the support member for adjustably clamping a cooler to the support member.