The Finum disposable tea filters of natural FSC-certified fibers, come in various sizes - perfect for any cup or large pot. | These tea filters can also be used without a filter holder as the filling flap facilitates the removal of the filter after brewing. | The filter can be sealed in the manner of a ?tea bag? by folding the filling flap and closing it with any filter holder, e.g. piercing the filter with the Filter Stick. | Made with unbleached, biodegradable paper | This L size is ideal for pots.