Keep your ale cozy and warm this winter with The Brew Belt. Maintains ale fermenting temperature in cold areas. Fits 5 to 8 gallon fermenter buckets,
3 to 6 gallon Better Bottles, and 3 to 6 gallon glass carboys (The manufacturer states that it is not for use with glass, so, do so at your own risk......they
also say not to place a blanket or other insulation around it because it will overheat....so there are your caveats).