Buff ThermoNet Etherial:

When weather conditions require high-thermal insulation, ThermoNet Multifunctional Headwear provides maximum protection from the cold. This comfortable, thin multifunctional headwear is made with breathable, durable PrimaLoft yarn that is four times warmer than regular microfiber. The result of years of research and testing, ThermoNet Multifunctional Headwear wicks moisture away from your skin while trapping heat inside, keeping you comfortable and dry in even the most frigid winter weather.

Features:

• 4 times warmer than microfiber
• Featuring PrimaLoft yarn
• High warmth-to-weight ratio means you dont need bulk to stay warm
• High-thermal insulation: mimics the warmth of down
• Moisture management
• Seamless with bonded ends