This heat insulation jacket is designed to be used with the Grainfather to keep heat contained in the boiler and maintain a constant temperature during your brew during cooler times of the year.

Features 

• Material - SBR Foam (7 mm thickness)
• Designed for the Grainfather for heat insulation, especially in colder temperature areas.
• Easy to wipe clean, polyurethane outer layer, and machine washable.