The Hario Filter-in Cold Brew Bottle is a new way to make delicious and refreshing tea. Its special feature is that it brews the tea leaves with cold water. Just fill the filter with your favourite tea leaves, pour cold water over it and put the bottle in the fridge. This brewing method allows for a smooth and rich taste without bitterness. The strainer on top of the bottle keeps the leaves in. It's also great for making flavoured water - just add your favourite fruit instead of tea leaves.