The Mountain Hardwear WomenAAAs Advance Zip Top features the ingenious Advance fabric that employs channeled construction to place less material against your skin for a super-lightweight feel.

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Count on the Patagonia Women\222s Capilene 2 Zip-Neck Shirt\222s moisture-wicking, quick-drying, and odor-fighting properties when you hit the slopes this spring or go for a trail run in the autumn air.

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Mountain Hardwear's Women's Micro Chill Zip Shirt helps keep you active and comfortable even when the mercury starts to drop into the ground.

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The Sherpa Adventure Gear Women's Kusang Top is as stylish while traveling as it is functional when layered under you jacket.

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The Patagonia Women's Capilene 1 Silkweight Long-Sleeve Scoop-Neck is a silky, super-light base layer you'll wear all year.

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Throw The North Face Light Zip-Neck Long Underwear Top on as a stand-alone shirt for fall backpacking trips or as a single layer under a softshell for slushy spring skiing.

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So Patagonia makes its time-tested Micro D-Luxe 1/4-Zip Long-Sleeve Top each year, just to put a comfortable barrier between you and the cool air.

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Snow pounded the mountains all night and now it's time to play. Pull on the soft and breathable Stoic Women's Merino 150 1/4-Zip Top Long-Sleeve Shirt and head for the hills.

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As the sun takes a peak over the frosty treeline, reach for your Stoic Men's Merino 150 1/4-Zip Shirt and let super-smooth merino ease you into your early morning ski tour.

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The Marmot Men's Midweight Zip long sleeve shirt covers you in a shaped fit that's easy to layer without accumulating bulk, and the half neck zip dumps heat when the temps rise.

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