This fermentation heating wrap belt is perfect for homebrewers who want to maintain a stable temperature during the fermentation process. Whether you're using a FermZilla Conical, All Rounder, glass carboy, or PET fermenter, this wrap will work great. It's super easy to use with its Velcro strap. The wrap has a 110V plug and is about 39' x 9.75' in size, offering large - area coverage to keep your beer fermenting evenly.