ThermoNet® Balaclava. Extra Lightweight balaclava ideal for full-face coverage during high-intensity activities like running, hiking, skiing, and cycling. Take your performance to its highest level thanks to its wicking and insulating properties. The new BUFF® ThermoNet® Balaclava has multiple ways to wear for ultimate versatility and a ponytail opening for extra comfort. Features At least 70% of recycled materials have been used to create this product. Help creating a better world. One piece accessory designed to protect both head and neck. Low weight product, designed to be extremely light to wear. Perforation in mouth area to improve comfort and breathing. Ventilation holes and ponytail opening for extra comfort. ThermoNet® technology enhanced. Tight, comfortable and stretchy: Wear it under a helmet! Lightweight protection for a better comfort.