Our lightweight Matrix was born to multitask in the mountains - as base layer, midlayer or shell- depending on the conditions and your exertion level. It's a combination of stretchy, moisture-wicking Activist fleece and abrasion-resistant/ water-repellent stretchwoven patches (shoulders, front torso and lower arms). The soft interior won't steal heat from your skin if it's worn as a base layer. The fit is trim and the chin zipper is offset for layering comfort; the hem cinches in to seal out gusts. Handwarmer pockets zip shut. Suit up with Activist Fleece Tights (below) or the companion Guide Pants (p. 13). Made in USA.