When your core is warm, it increases blood flow to your extremities. Cold hands and feet? Zip into a fleece vest like Patagonia’s Classic Retro-X Vest. The Retro-X outclasses other vests with hip throwback styling, and outperforms the competition thanks to a windproof-breathable barrier between its fuzzy fleece exterior and moisture-wicking mesh lining. Zippered chest and hand pockets and a stand-up collar add utility as well…