[header] How to choose cold weather fitness clothing [title] Choose a light base layer. [step] The layer closest to your skin should be a moisture-wicking material that will keep you dry as you sweat. It should also be form fitting to help insulate your body. 
Avoid cotton, as it can become damp from your sweat. Instead, look for shirts that are made of : [substeps] Wool polyester wool/polyester mix polypropylene [title] Wear fleece over the base layer.