Coffee Sock





  • All of our filters out-perform any comparable disposable and reusable filters.
  • Cotton absorbs some of the oils released from coffee beans yet lets acids pass through. The resulting cup is clear crisp, rich and robust with all the acid of paper brewed coffee, without the paper taste, and all of the richness of French press without the heavy oiliness.
  • CoffeeSock filters are made with Certified Organic Cotton.
  • Cotton imparts no flavor on the finished brew unlike paper.
  • Cotton is 90% cellulose, which is a tasteless and odorless compound that is insoluable in water. Wood is 40-50% while Hemp is approximately 45% cellulose. 
  • Microns 70-100



  • CoffeeSock® filters are expected to last about a year before quality of brew begins to fade.
  • CoffeeSock® filters are 10-50% the cost of disposable filters per year, and 20% the cost of quality reusable filters.
  • Cost per year comparison

CoffeeSock® Filters      $13

Cheapest Paper filters   $20

Premium Paper filters    $72

Chemex® Filters            $108

Able Kone Metal Filter    $60

DIY ColdBrew© at and average of $0.50-0.75 per serving saves over $900 per year on coffee shop cold brew coffee.



Ease of Use, Cleaning and Care

 Daily use is as simple as: Brew, Empty of grounds, Rinse, Hang to dry


  • CoffeeSock® hot brew filters are sold in pairs so that one can air dry while the other is in use. The filters perform equally well while still damp and can be used repeatedly for the duration of a service shift in coffee shops.
  • We recommend boiling the filters for 10 minutes before first use to remove any manufacturing oils and pre-shrink the fabric for best performance. Filters will perform best at this point and continue to perform at this level until they begin to wear, at approximately 9 months to a year.
  • Additionally it may prove useful to boil the filters periodically in clean water to clear oil buildup. This will restore the filter to an as new performance.
  • Boil in clean water to sanitize any contaminated filters (ie. dropped on floor or exposed to perishable foods).

Coffee/Environmental Facts

  • 25 billion cups of coffee are consumed per day globally. (That could equate to over 140 million filters if only half of those cups came from 8 cup brews using a filter.)
  • Each CS filter purchased keeps at least 365 filters per year out of the Landfills. That is 4-12 cases per year.
  • If 1/3 of the 2.25 billion cups of coffee consumed globally per day were made with paper filters in 8 cup batches  (That will equate to 1.5 million trees or 433,000 cubic yds of trash. 433,000 cubic yd of trash is a 227 ft cube (over a cubic acre) or the equivalent to a 257 million square foot building filled with trash, or the contents of 128 buildings the size of the Louvre.)
  • Cotton is a more efficiently renewable resource than plastic, metal or paper.


DIY ColdBrew Filter

Quart(32oz) Mason Jar
Quart (32oz) Mason Jar
1/2 Gallon(64oz) Mason jar
1 Gallon Brew Jar
2 Gallon Brew Jar
Brew Method:
ColdBrew 6-20 Hour
Chemex Style 6-10 cup
6 Cup Chemex
8 Cup Chemex
10 Cup Chemex
also fits Hario v60
Brew Method:Pour Over

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