When running in cold weather, wearing a fleece or thermal hat will help prevent heat loss and keep you safe and comfortable. Check out these winter running hats for women:
Womens illumiNITE Cresta Microfleece Hat
Photo courtesy of PriceGrabber
Keep your head and ears toasty with this cute microfleece beanie. The stretchy windGARD fabric blocks wind. The hat also features illumiNITE's powerful reflectivity, so you can be visible when running in the dark. 
More: Reflective Gear for Runners
TrailHeads Goodbye Girl Ponytail Hat
Photo courtesy of PriceGrabber
If you have long hair, it can be annoying to have your ponytail bunched up in the back of your winter hat. This TrailHeads Goodbye Girl Ponytail hat has a hole in the back, so it keeps your ponytail up and out of the way. It's made of Polartec fleece, which provides excellent insulation. The fabric also has a durable water repellent finish to shed rain and snow.
Brooks Women's Vapor-Dry 2 Racer Cap
Photo courtesy of PriceGrabber
This sleek running hat is made of polyester and spandex, so it wicks away moisture, keeping your head dry and warm. It also features a ponytail opening in back.
Mizuno Breath Thermo Head Pip
Photo courtesy of PriceGrabber
This winter running hat from Mizuno features an amazing new technology that actually generates heat from the absorption of moisture. Heat is generated via a chemical exchange between perspiration and the properties of the Breath Thermo fabric. The hat also has anti-bacterial and deodorizing functions, so it won't get smelly from sweat. It's one-size-fits-all, so it works for both men and women.
More: Men's Winter Running Hats
