There are four basic categories of WINDSTOPPER® fabrics: WINDSTOPPER® Active Shells are the lightest, most packable garment offering total windproofness, maximum breathability and water resistance. WINDSTOPPER® Active Shells keep you comfortable for enhanced performance during highly aerobic activities. WINDSTOPPER® Soft Shells offer total windproofness and maximum breathability, combining the comfort of a soft mid-layer and the water resistance of a shell in one garment. WINDSTOPPER® Soft Shells keep you comfortable with the freedom of movement you need for enhanced performance in a wide range of activities and weather conditions. WINDSTOPPER® Technical Fleece provides more warmth and comfort than non-windproof fleece with less bulk by combining total windproofness and maximum breathability. WINDSTOPPER® Technical Fleece is effective as a mid-layer or outer layer, keeping you warm and comfortable in cool and windy conditions. WINDSTOPPER® Insulated Shells provide lightweight warmth by combining total windproofness, maximum breathability and water resistance. WINDSTOPPER® Insulated Shells are designed to keep warm air in and the cold wind out, while allowing perspiration to easily escape. They are ideal for cold and windy conditions.