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The Smartwool Microweight Crew Baselayer Top is a universal shirt that can be worn in many situations from running in the heat to hiking in the cold mountains. The flatlock seam construction allows for maximum movement without the possibility of chafing. This feature allows for the Smartwool Microweight Crew to be worn while running or working out on hot or cold days. The UPF 30 protection also makes this shirt beneficial to wear in the sun over other shirts because it helps block off those harmful rays.
1 (800) 409-SNOW