30OZ. RTIC TUMBLERS ARE STAINLESS STEEL, DOUBLE WALL VACUUM INSULATED. KEEPS YOUR DRINKS ICE COLD LONGER - WORKS GREAT FOR HOT BEVERAGES. THE INCLUDEDALL-NEW SHADED SPLASH PROOF LID LETS YOU KNOW EXACTLY HOW MUCH DRINK YOU HAVE.THE FLIP-TOP CLOSURE RESISTS SPILLS AND IS STRAW FRIENDLY. EASY TO CLEAN. COMPLIES WITH PROP 65. 4" D X 4" W X 8" H