The Alchemy Jacket from Mountain Hardwear is a marriage of Gore Trango WindStopper and Polartec Power Shield stretch woven fabrics resulting in this versatile soft layer that is windproof and incredibly water resistant.Features: It is designed to stop the wind cold, but allow ample breathability to prevent meltdown, this piece responds to the demands of foul weather exertion . The non-restrictive stretch panels allow for full span movement and the athletic fit allows for light shell over layering. It has a welded chest pocket and two front hand pockets. One-handed adjustable hem and neck cinch draws allow you to easily and quickly seal the edges. Designed specifically for a woman's body. Specifications: Weight: 1 lb 2 oz. Shell: Gore Trango. Stretch Panels: Polartec Power Shield. Laminate: Gore WindStopper. Specifications based on size 8.