This face mask by Rothco is known as a one hole face mask, but is sometimes known as a balaclava. The purpose of this style of mask is to offer a layer of protection on your face that covers everything but your eyes.
Constructed from a double layer 100% acrylic, this mask provides a layer of insulation on each side. Capable of keeping wind out and body heat in, you will be very comfortable wearing this mask on cold days. Airsoft enthusiasts have also used this mask for the tactical look and feel that it provides as the balaclava has long been associated with tactical teams.