The filter brewer from Rosendahl Grand Cru fits all coffee filters in the size of 1x4. It fits the high Grand Cru thermos where it is screwed to the top for safe and stable coffee brewing. The coffee funnel at one time makes brewing of coffee more simple and more luxurious. The filter brewer is for those who want a more sensual coffee brewing with a focus on the simple and authentic. It fits both the coffee enthusiasts and the adventurous who want to explore a traditional form of coffee brewing, and partly to the active life on the go for you, for example, who enjoy camping or other outdoor activities, where the coffee still wants to taste really good.