THE 1.9l VACCUM FLASK EXCELS IN PERFORMANCE BECAUSE OF ITS EXCEPTIONAL DESIGN IT HAS REMARKABLE INSULATION CAPABILITIES & IS EASY TO HANDLE, DUE TO ITS COMPACT CONSTRUCTION THE VACCUM FLASK IS IDEAL FOR SOCIAL OCCASIONS, YOUR BAVERAGE IS SURROUNDED BY VACCUM INSULATION, WHICH TO THIS DAY IT IS THE MOST EFFICIENT WAY OF MAINTAINING TEMPERATURE BOTH – HOT & COLD IT KEEPS HOT OR COLD DRINKS FRESH & TASTY FOR HOURS