Wrap a heat belt snuggly around your fermenter to provide direct and consistent, low level heat to help maintain the ideal fermentation temperature.
Adjust the size to ensure a snug fit for your fermenter & turn it on - easy as that.
It works best on a plastic fermenter but can be used with care on a carboy or demijohn.
Inexpensive and economical to run, a heat belt is a great addition to your home brew toolkit.
Use it on its own or with a heat pad.