Our polyester & spandex womens knit beanie can
  power your warmth for up to 7.5 hours! Activate the over ear dual steel fiber
  tech heating areas, across 3 temperature settings, with our one touch led
  controller. This durable heated womens beanie with 100% acrylic fiber
  interior is machine washable as well! Don’t let the winter cold stop you from
  doing the things you love!