Stay hydrated with help from the Igloo Rival Auto Chug 1/2 gal Jug. Cool Riser Technology® helps improve cooling performance by elevating base to reduce thermal conduction, and the fully insulated design with a generous foam wall offers cold and ice retention. Igloo Rival Auto Chug 1/2 gal Jug Green - Ice Chests/Wtr Coolrs at Academy Sports