Polartec® Crewneck Baseline ShirtAdventure (and layering) starts here. Layer up and start your adventure with the Polartec Crewneck Baseline. This simple long sleeve is built for alpine starts, big days, suffer fests, and epic adventures. Made from a variety of highly breathable, midweight insulating Polartec, the Crewneck Baseline offers insulation and comfort in any season.
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