QUALITY CONSTRUCTION – These heated socks for women and men are crafted from the perfect blend of wool, cotton, and Spandex to ensure incredible durability. They use advanced ActionWave heat reflective and FAR infrared heating technology to offer hours of heat. LONG-LASTING HEATING – These battery operated heating socks reach a maximum temperature of 130° F and are designed to keep your feet warm for up to 4 hours. They will allow you to enjoy your favorite outdoor winter activities for hours. HOW TO USE – The heated battery socks are easy to use. Simply insert three AA batteries into each power pack, then connect the power pack to the cord placed in the pocket on the top of the sock and press the red power button on the power pack to turn it on. PRACTICAL DESIGN: These lightweight battery powered heating socks are designed with integrated heating panels to offer the ultimate combination of versatility, comfort, and warmth. They are easy to wash and care for. SET INCLUDES – Each set includes (2) ActionHeat cotton blend unisex fit battery heat socks and (2) AA Power Packs. These socks are available in S/M, L/XL, and XXL sizes, and black and grey color options to suit individual preferences and needs. Keep your feet warm on cold winter days with the versatile and practical ActionHeat Classic AA Battery Heated Socks. They are made of the perfect combination of Spandex, wool, and cotton to ensure years of durability. They use advanced technology to warm the core body temperature. These heat socks for women and men can reach a maximum temperature of 130° F and can last up to 4 hours. Simple and easy to use, they feature integrated heating panels to offer a perfect blend of warmth, versatility, and comfort. You can handwash them or you can use a mesh wash bag for gentle machine wash. Each set comes complete with (2) ActionHeat unisex fit socks and (2) AA Power Packs. These heated socks with batteries come in black and grey color and S/M, L/XL, and XXL size options.