The Trift Half-Zip Long-Sleeve Top is an excellent first layer whether we're packing our gear up the skintrack or spending a cool weekend in the woods. This baselayer's techy blend of merino wool and nylon is as durable as it is comfortable, filled to the brim with naturally odor-resistant, moisture-wicking, and breathable tech. Its seamless design prevents chafing when we're traveling with a pack, and its next-to-skin fit is ideal for layering in ice-cold temperatures.