Gore Windstopper Thin, warm, wicking, wind-blocking 4-way stretch panel at back Sleek, comfortable neck protection Ideal for mixed weather including windy conditions and light rain showers Powerful wind protection and the power of Gore Windstopper technology provides a fully windproof shell with maximum breathability. Keep the wind off your face and neck while still feeling open and free. The Windstopper neck-up from Seirus has an adjustable draw string to keep it snugly in place wherever your adventures might take you. Recommended for: On-mountain winter adventures in snow, harsh wind, and extreme cold