Men's Midweight OG Long Sleeve - 100% Merino Wool, Black

Same OG, just heavier. The Midweight OG is your cold-weather upgrade—built with the same trusted design as our original OG Long Sleeve, but in a warmer, more substantial 230gsm merino. Ideal for chilly morning runs, winter hikes, or throwing on after a cold plunge.

Features

• 100% New Zealand Merino Wool – 230gsm
• Fine micron: 18.9 micron 
• Midweight warmth with zero bulk
• Breathable, moisture-wicking and naturally odour-resistant
• Regulates body temperature in cold or fluctuating conditions
• Moves with you – stretch and recovery built in
• Ideal as a standalone or cold-weather base layer
  
• Designed in New Zealand, made in China or Fiji
• Easy care – machine washable on wool cycle

Description

For the colder months—or for those who simply run cold—the Midweight OG is your merino MVP. At 230gsm, it delivers a little more insulation than our standard OG, without compromising on breathability or comfort.

Soft, itch-free and naturally temperature-regulating, this long sleeve adapts to your environment and activity. From winter trail runs and backcountry hikes to layering under a jacket for the daily commute, it’s built to perform and made to last.

If you’re after a one-and-done merino top for cooler conditions, this is it. Same cut, same trusted fit—just a little more muscle.

Fabric & Care

• Fabric: 100% Merino Wool, 230gsm
• Micron: 18.9 
• Care: Machine wash cold on wool/delicate cycle with wool detergent. Lay flat or air dry.
• Origin: Made in China or Fiji using NZ merino

Why Merino 365?

Born in New Zealand, tested by nature. We use only the highest quality merino wool—engineered for performance, made for daily wear. No synthetics, no compromises. Just natural comfort, 365 days a year.