Mason Jar Neoprene Cover
Vendor: Craft a Brew
These light proof mason jar covers come in 2 sizes to fit a 16oz and 32oz mason jar for The Catalyst Fermentation System. When combined with the Cover for The Catalyst your homebrew will be 100% covered and UV proof so no matter where your beer is fermenting it will be...
Cool jar cozi
The jar cover works great. Fits perfect, keeps the UV out and even looks great.