A tumbler with a heat and cold insulation function due to the vacuum insulation structure. Designed to match the characteristics of beer such as ale beer and lager beer, the opening is widened to make the aroma easier to stand so that you can enjoy the aroma due to temperature changes in the ale, and the mouthpiece is 0.8 mm thin so that you can taste it little by little. To the reverse taper of. The taste and aroma spread throughout the tongue, making it ideal for ale-based beers with a bitter taste. Stacking is possible with a capacity that is perfect for 350 ml cans.