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Shop Merchants:

Nothing beats this tee for multi-sport training and most any other outdoor activity--every athlete needs one.

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For fall and winter high-intensity workouts, call on the REI OXT Pace long-sleeve top it takes the chill off.

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The multi-sport REI Power Stretch top is great for a wide variety of cold-weather outdoor activities at any exertion level.

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The North Face Borealis features recycled moisture-wicking fleece and underarm panels that trap and treat odor-causing bacteria.

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The North Face Reckoning T-shirt is perfect for cool-weather workouts when you require a high-performance fabric and protection for your arms.

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The Under Armour Approach T-shirt is ideal for trails or mountains or wherever you train.

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The all-purpose Hundo fleece top from Under Armour provides quick-drying, comfortable warmth.

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This mock tee keeps you warm during rigorous activity in colder weather.

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Keep cold weather at bay during your winter workout with the men's RUNfit Half-Zip top from Zoot.

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The Zoot RUNfit long-sleeve tee is a great choice for a wide variety of athletic pursuits.

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