Control the temperature of your brew with Ritchies 2 Demi Heat Pad. This heat pad is designed to fit around two demijohns and helps to maintain a consistent temperature during fermentation. The heat pad is easy to use and can be adjusted to your desired temperature. It is perfect for use with beer, wine, cider, or mead. Elevate your home brewing with Ritchies 2 Demi Heat Pad.