Perfect coffee extraction: the double-layer food grade stainless steel filter has a high-density design with excellent filtration efficiency and no residue. Foldable hanging ears: The foldable hanging ears are suitable for most cups, small pots and glass bottles. Suitable for cups with a diameter of 7.6 - 11 cm. Portable: it offers you a cup of delicious, smooth and delicious coffee. It is very suitable for camping, hiking, fishing and travel. You can use it anywhere there are cups, hot water and coffee. Environmentally friendly: the paperless handmade coffee can be reused, reducing the waste of disposable filter paper. You don't have to worry about the smell of the filter paper affecting the coffee taste. Unique design of bracket foldable keep the size small and cute, easy to carry. Unfold to make coffee, with the heat resistant handle. Fold for storage in the cup.