The ActionHeat AA battery heated fleece scarf is great for any outdoor activity. With an easy on/off button, it's easy to add warmth and keep your neck and shoulders nice and toasty. Weather resistant fleece & cozy fleece lining provides warmth, comfort, and versatility. Strategically placed heating elements use ultra-fine fibers for optimal heating performance. The scarf features an integrated heating system located on the back of the neck. The AA fleece scarf have one heat setting that reaches 120F and lasts up to 4+ Hours. Fit & Design: Weather-resistant fleece & cozy fleece lining provides warmth, comfort, and versatility Strategically placed heating elements use ultra-fine fibers for optimal heating performance An integrated heating system located on the back of the neck Technology: Heating panels encapsulated with a thermal seal provides additional durability & moisture protection A layer of advanced Thinsulate insulation Additional Details: Weather-resistant plush fleece A thermal seal provides the heating system with durability & moisture protection