Description of Marmot Power Stretch Vest - Women's The Power Stretch Vest blends the efficient warmth of a vest with the cozy stretch fleece of Power Stretch fabric. The pocket adds key storage. Features: Weight: 7 ozs / 198 g Shell material: Polartec® Power Stretch® P-680S Flat lock construction Designed to fit over baselayer Zip chest pocket to secure small items Wind flap behind front zipper with chin guard protects against drafts Sized specifically for women to fit your body, not a smaller men's version