Men's Base layer

A heavyweight merino wool base layer top designed to help regulate temperature during high-intensity activity, the 260 ZoneKnit™ Long Sleeve Crewe features 100% and natural merino wool.

A heavyweight merino wool base layer top designed to help regulate temperature during high-intensity activity, the 260 ZoneKnit™ Long Sleeve Half Zip feature 100% and natural merino wool.

A heavyweight merino wool base layer top designed to help regulate temperature during high-intensity activity, the 260 ZoneKnit™ Long Sleeve Crewe features 100% and natural merino wool.

A heavyweight merino wool base layer top designed to help regulate temperature during high-intensity activity, the 260 ZoneKnit™ Long Sleeve Half Zip feature 100% and natural merino wool.

Heavyweight merino wool base layer bottoms designed to help regulate temperature during high-intensity activity, the 260 ZoneKnit™ Leggings feature 100% merino wool.

A lightweight performance baselayer that excels during high-output pursuits, the Merino Blend 125 ZoneKnit™ Long Sleeve Crewe combines light and breathable Cool-Lite™ fabric with our ZoneKnit™ technology.

A lightweight performance baselayer that excels during high-output pursuits, the Merino Blend 125 ZoneKnit™ Leggings combines light and breathable Cool-Lite™ fabric with our ZoneKnit™ technology.

An ultra-comfortable base layer top that feels like a second skin thanks to its slim-fit seamless design and highly breathable merino-blend fabric, the Merino Blend 260 ZoneKnit™ Seamless Long Sleeve Crewe features body-mapped mesh panels for added ventilation.

Ultra-comfortable base layer bottoms that feels like a second skin thanks to a slim-fit seamless design and highly breathable merino-blend fabric, the Merino Blend 260 ZoneKnit™ Seamless 27-inch Tights features body-mapped mesh panels for added ventilation.

Comfortable base layer top that feels like a second skin thanks to its slim-fit seamless design and highly breathable merino-blend fabric, the Merino Blend 260 ZoneKnit™ Seamless Long Sleeve Crew features body-mapped mesh panels for added ventilation.