Clima-Tek Crewneck Base Layer – Men's

When the temperature drops and you need a reliable first layer, the Clima-Tek Crewneck is our top pick for trail runners and outdoor athletes who run cold or layer up. Clima-Tek fabric with activated carbon handles odor control and thermoregulation without adding bulk, while full 4-way stretch keeps up with every stride. Available in Black, Grey Heather, and Nightfall Heather.

• Activated carbon fiber blend neutralizes odor naturally — no chemical treatments wearing off over time
• Full 4-way stretch moves with you in every direction, no binding or bunching during high-output efforts
• High-performance moisture wicking pulls sweat away fast, keeping you dry through hard efforts or long days out
• Warmth Factor 6 rating makes this a solid standalone piece on cool days or a foundational layer when temps really drop
• Soft, dry hand-feel that won't scratch or irritate on bare skin — even during all-day wear under a pack