Columbia ™ T-shirts (Mountain Tech™) have the word Tech in their name for a reason

• 100% polyester fabric wicks away moisture
• Antimicrobial to control odor in garment
• UPF 15 rating minimizes sun damage
• Flat stitch seam construction
• Tagless neck label

Omni-Dry® Mountain Tech™ T-shirts are made for the person who isn't afraid to sweat to get the job done right. Columbia T-shirts are unlike traditional cotton T-shirts because they are made of a 100% polyester fabric which is designed to wick away moisture and dry quickly. Technical because they are antimicrobial which reduces the odor in the garment caused by everyday perspiration. Technical because they have a UPF 15 rating that minimizes the damage done by the sun's harmful UV rays. Flat stitch seam construction and tagless neck label provide all-day comfort. Imported. Specify color and Men's chest size: S (35-38), M (38-41), L (42-45), XL (46-49) or 2XL (50-53) from the selection box above. See drop down for colors and sizes currently available.