Original BUFF® & Primaloft have combined to make a brand new fabric, ThermoNet. The ThermoNet has high thermal properties and is 4 times warmer than the Classic Original. Ideal for people looking for a really warm but lightweight multifunctional product that can be used to offer maximum protection from cold during outdoor activities like running, hiking, ski mountaineering, cross-country skiing, biking or motorcycling. Thermonet BUFF® can be worn as a neckerchief, headband, wristband, mask, hair-band, balaclava, scarf, headband, scrunchie, saharaine, pirate cap, beanie and bandana.