These coffee filters offer a covenient way to make your coffee.  Great for camping or taking away as they are made from stainless steel.  Also environmentally friendly as no paper needed.  Simply put the filter (which they call a Phin in Vietnam) on top of your cup or mug, spoon in your coffee and then use the press provided-gently pressing down on the coffee.  Slowly pour some (off the boil) water just to cover the press.  Leave it 20 seconds whilst the coffee blooms.  Then fill to the top with hot water.  Then cover with the lid.  It will take a few minutes to drip through.  Once all the coffee has dripped through you can use the lid as a saucer for the filter to avoid any mess.  Now sit back, relax and enjoy your drip filtered coffee.