Super Soft & Cozy Grey Aroma Season Ear Warmers (Men, Women & kids) - NWT - never worn! - 2 heating modes in 1 button (It can heat up to 131℉ and will stop heating automatically in 30 minutes, Low temperature: 113 ℉ to 122 ℉, High temperature: 123 ℉ to 131 ℉) - Soft, Cozy Plush Material (heated ear muff is made of 100% polyester material and plush. Also breathable and friendly for sensitive skin.) - Adjustable Size (foldable earmuff fits for both children and adults, it can be stretched from 21.6 in to 22.4 in) - Lightweight & Portabl (foldable for storage, the weight is 161g.)