The HECS balaclava headcover is a one-size-fits-all headcover. It is a full-face hunting head sock. It is made from breathable, lightweight, and durable material with an opening for your eyes and a drawstring in the back. It's the perfect headcover for outdoor strenuous activities. Its patented grid technology is part of its construction and is made of an interlocking carbon fiber mesh. This type of design allows the face mask to block electronic energy waves that animals can naturally detect. This allows you to get closer to animals and they won't be scared away or sense that you are close by. Buy yours today at Sawyer's Country Edge.