Wind chill is based on how temperature is felt on exposed skin. Basically, the heavier it blows, the quicker you want to cower under a down blanket or move closer to the fire. With the help of WINDSTOPPER technology, the Simms Flyte Jacket effectively annihilates wind chill and it does it in an incredibly lightweight, highly-breathable package. Less bulk. More warmth. Fish Longer. Features include: WINDSTOPPER Soft Shell fabric offers lightweight windproof & water-resistant protection, Articulated sleeves improve fit and ease of layering, Comfortable, fleece collar adds warmth, Fleece lined, hand warmer pockets, Sleek, adjustable waist are weather resistant, Easy cinch cuffs are comfortable and weather resistant, Imported. Sizes and colors available as displayed.