Having trouble getting that vigorous boil you are looking for with your Grainfather? This heat insulation jacket is designed to keep the heat in your Grainfather to maintain a more constant temperature and be able to boil easier during the colder months of the year. Made from SBR foam (also known as Neoprene foam) with a polyurethane outer layer making it machine washable and easy to wipe clean.

Features:

• Made from SBR foam (0.27 in. thick)
• Polyurethane outer layer
• Machine washable