Joshua Tree Kombucha Premium Quality Kombucha Covers are made of 100% Cotton.
Includes four muslin fabric squares. The covers are sized for one-gallon fermenting jars or smaller.Keep Fruit Flies and Bugs Out of Your Kombucha!
Muslin fabric gives your brew the ideal amount of breathable air for fermentation.
Regular towels can be too thick/unbreathable, suffocating your brew.
Cheesecloths are not good filters for bacteria and insects. Even folding cheesecloths several times will still allow unwanted guests into your brew