Montane Protium Beanie Hat The Thermo Grid fabric used on the Montane Protium Beanie provides effective temperature regulation and the brushed back feels warm next to the skin. The warm and comfortable Protium Beanie from Montane has a stylish and sleek look providing you with excellent cosiness and the Thermo Grid fabric offers total comfort and warmth. Thanks to the brushed-back fleece, the light, warm and versatile beanie hat can be used comfortably as a helmet liner or stand-alone hat for a variety of activities. A double-thickness headband further enhances warmth and comfort whilst also adding extra coverage. Suitable for hiking, mountaineering, trail running, fastpacking, ski touring and other cold-weather adventures, this beanie is the perfect addition to your outdoor wardrobe.