Hard-to-find Sowden SoftBrew™ Coffee Brewer - a simple infusion method for brewing coffee. The Sowden SoftBrew™ filter is the technological heart of the SoftBrew™, with thousands of holes, fine enough to block all grounds larger than 150microns - practically speaking, this means that you are free to use any type of grind you choose - fine, medium or coarse - the Sowden SoftBrew™ filter does the rest - used together with the Sowden porcelain coffee pot it is designed to keep the coffee grounds out of your cup whilst letting all the flavour from the beans brew naturally and flow unhindered or trapped. (from their website)