One of the reasons I'm able to never check luggage -- including on my recent two week hiking trip in Northern Spain -- is because I pack clothes that serve more than one purpose. Stio, a company based in Jackson Hole, Wyoming, is noted for manufacturing items that perform well and look good, whether you're on the trail or working or playing in town. This item (below) is the women's Thermop Fleece shirt, which is warm and comfortable, perfect for hiking when it's a bit chilly but also ideal when paired with leggings and even a skirt when running around an urban area. The fabric has a little bit of a stretchiness, so the shirt doesn't feel confining, and the silhouette is flattering. Fleece is a perfect material for aerobics in the Fall or Winter because it wicks away sweat while providing warmth. Underneath it, I wear a thin Merino wool long-sleeved shirt. And, though, the front looks like it's a bottom up, in fact these are snaps, which reduced the fuss factor when you need additional ventilation.