The product is a wine fermentation heating belt, mainly composed of alloy electric heating wire and a high temperature silicon rubber insulation fabric. It is a quick heating, uniform temperature, high thermal efficiency, great toughness, convenient use, safety, waterproof, aging and a long lifespan. Features - Color: Black. - Material: Silicone. - Size: About 183x3.8x3.8cm/71.92x1.49x1.49inch. - Surface temperature: 40-60 () - Maximum voltage: 110-240 (V) - Power: 10-50 (W) - Easy to store away after use unlike heat pads. - Gives you a quicker, more complete fermentation. - Keep your yeasties snug and warm with this simple heat belt. - Silicon rubber electric heater type is a special soft, the design of high power density. - This is a heating belt that goes round your keg or other fermenter to keep it warm so your yeast ferments at its preferred temperature.Packing list1 x heating belt