OMNI-WICK: Moisture-wicking technology for the outdoors. Omni-Wick pulls moisture from the skin into the fabric where it spreads across the surface to accelerate evaporation—for fast drying, enhanced next-to-skin comfort. COMFORT STRETCH: Crafted from a soft polyester knit for enhanced range of motion and stretchy performance. ACTIVE FIT: This tank is cut for activity with comfort stretch quick-drying polyester that’s designed to move with you. VERSATILE LAYER: This hard-working tank is the perfect base layer for your next hike — or just running around town. BUILT TO LAST: Columbia’s attention to detail is what sets our apparel apart. Specifying only the highest quality materials, expert stitching, and craftsmanship. This is a long-lasting garment you will enjoy for seasons to come.