Heavy Duty Stainless Steel (Inox). Built to last for many years. The design is easy to use and quick to clean afterwards. Dishwasher Safe. A Great Way To Make Coffee Quick, Inexpensive, Reusable, Lightweight for travel,or backpacking. Tip: Pour a small of water and wait a few seconds for the coffee grounds to get saturated before filling the chamber with water. Heavy Weight Gravity Damper to prevent the coffee "blooming" and floating on the water. Traditional way to make Delicious coffee. This Coffee Filter (Phin) is used in Coffee shops all across Vietnam. Now you can make Ca Phe Sua at home.