Personalized Style:Customize your look effortlessly with mix-and-match components. Head and Ear Warmth: Keeps your head and ears cozy in cold weather. Versatile Design: Can be worn as a snug neck warmer or in other ways. Seamless Comfort: Soft and comfortable, blends smart textile with traditional knitting. Winter Fashion: A stylish accessory for outdoor winter activities. control / smartphone app: five heat-setting levels & maintain constant temperature 15/30/60-minute timer *smartphone app can connect up to 6 KnitWarm products at the same time