Easy to use and re-use system for pour over coffee. In this way you can envoy a fresh cup of coffee instead of falling back on (tasteless) instant coffee. It is very suitable for one or two persons. The filter can be used as a filter itself or in combination with a additional paper filter.
Twp Dutch companies (RubyTec and Bo-Camp) are offering these types of filters. They work according to the same hanging principle as some prepacked coffee filters from Thailand. Those ones are single use while this is refillable. They also work good with a small paper filter. Then it is more of a filter holder instead of a filter itself.