No Spills, No Stress. Meet your new favorite 40oz Tumbler. The HydroJug Traveler is completely leakproof, cupholder compatible, and has a hygienic circular flip straw for easy sipping. Go anywhere and do anything with this durable, insulated and sleek hydration companion. Key Features: Circular Flip Straw Soft Touch Ambidextrous Lid Triple Wall Insulation Rubber Base Compatible With Most Cup-Holders Leak Proof 40oz Protected by U.S. and foreign trademarks and patents. Patent Pending