Closeouts . Built for constant movement, the Columbia Sportswear Arctic Trek base layer top embodies high performance with Omni-Wick® moisture-wicking, fast-drying construction combined with Polartec® Power Wool®. Flatlock seams reduce chafing, and comfort stretch enhances comfort for optimal motion.

• From Columbia Sportswear's Titanium line of high-performance outerwear
• Omni-Wick® advanced evaporation technology moves and disperses moisture away from the body for rapid evaporation
• Polartec® Power Wool® combines natural and synthetic fibers to maximize warmth, wicking and next-to-skin comfort
• Antimicrobial treatment reduces odor-causing bacteria
• Ergonomic seaming and comfort stretch allow maximum range of movement
• Flatlock seams reduce chafing
• Thumbhole sleeve cuffs ensure a secure fit
• Base layer weight: Heavyweight
• Made in Viet Nam
• US shipments only
• Base layer weight: Heavyweight
• Long sleeves
• Fabric: 69% polyester, 31% wool
• Care: Machine wash, tumble dry
• Made in Viet Nam
• US shipments only