These portable one-cup drip filters, often referred to as “hanging ear” coffee bags, provide a simple, minimalist solution for brewing fresh coffee on the go, without the need for bulky equipment. Designed for travel, office use, or outdoor activities, they allow you to brew a single serving of ground coffee using only hot water and a standard cup.

The design relies on a deployable filter bag with side anchors that stabilize the filter over the rim of your cup. This mimics the mechanics of a traditional V60 or pour-over dripper but in a disposable, compact format.

Instructions for Use:

• Open: Tear the top of the filter bag along the perforated line.
• Mount: Pull the side hangers (the “ears”) apart and hook them securely over the edges of your cup.
• Fill: Add 10g to 12g of medium-fine ground coffee into the filter pouch.
• Brew: Slowly pour hot water (approx. 90°C–96°C) over the grounds in a circular motion. Allow the water to drip through fully.
• Dispose: Remove the filter by the ears and dispose of the used grounds.

Key Features & Specifications

• Universal Fit: The flexible side hangers are designed to stretch and fit most standard mugs, tumblers, and thermoses with a diameter between 65mm and 90mm.
• Material Safety: Made from food-grade, non-woven fabric. The bags utilize ultrasonic bonding technology, meaning they are sealed without the use of chemical adhesives or glues.
• Neutral Flavor Profile: The filter material is odorless and tasteless, ensuring it does not impart any paper or chemical taste to the coffee during extraction.
• High Flow Rate: The fabric density is optimized to prevent sediment from passing through while allowing water to flow at a speed that ensures proper extraction without bitterness.

These filters are particularly useful in scenarios where electric coffee makers or breakable glass equipment are impractical.

• Camping & Hiking: Ultralight and compact, they add negligible weight to a backpack.
• Office Environments: Allows for fresh coffee at a desk without using a communal machine.
• Travel: Ideal for hotel rooms where the provided coffee equipment may be lacking in quality or cleanliness.