The Merino 365 OG Ultimate 100% Merino Outdoorsman Underlayer is the best thing that you can do to your outdoor clothing stash. Experience New Zealand merino for the special fabric that it truly is.

If this is the f...

Buy Now From Amazon

Product Review

The Merino 365 OG Ultimate 100% Merino Outdoorsman Underlayer is the best thing that you can do to your outdoor clothing stash. Experience New Zealand merino for the special fabric that it truly is.

If this is the first time you have put on a merino garment then you are in for a treat and if you have bought other merino before then be prepared for an upgrade because Merino 365 uses only the best merino available on planet Earth.

We source our merino direct from a New Zealand South Island merino farm and see it from farm to finish. We do not buy this merino from a commodity market that then ships the merino off to Asia and has it come back contaminated with cheaper fabrics. In fact we can pretty much guarantee which flock it came from.

Merino is the most amazing, functional, and comfortable fabric for any keen outdoorsmen (or women). So whether you are hunting, fishing, hiking or just working outdoors then this is what you need.

Fun facts:

  • Renewable
  • Biodegradable
  • Fire resistant
  • Anti-bacterial
  • Provides UV protection
  • Holds it shape (doesn't stretch out)
  • Warm when cold and cool when hot
  • Soft Soft Soft
  • Machine washable cold
  • Hypo Allergenic

Nerdy details:

  • Merino has a large capacity to breathe and control moisture vapor next to the skin, making you more comfortable. It happens through a real scientific process called desorption
  • In cold conditions a small amount of moisture is retained in the merino fibers and undergoes a natural heating process, keeping the wearer warmer
  • Merino fiber has flame retardant properties exceeding those of all other commonly used textile fibers and is self extinguishing and non-melting
  • Through its complex chemical and physical structure, merino fiber resists the development and proliferation of bacteria and odor
  • Merino fabric carries a high SPF rating of 50+



  • Perfect for anyone spending time outdoors hiking, skiing, snowboarding, climbing, hunting, fishing, anything outside, merino is the smartest thing you can wear
  • Machine wash and dry normal; Made from 100% New Zealand merino; Perfect baselayer for next to skin
  • Temperature regulating, this shirt will keep you more comfortable longer, it will amaze you
  • Merino 365 merino is sustainable and ethically produced, so if you give a care about the environment then stop buying inferior poly based fabrics and buy mind-blowing natural merino
  • Made in Fiji, New Zealand, and China. Merino 365 sends out New Zealand bought merino to areas around the world to be ethically produced

Similar Products

Merino 365 Men's Slim Pant, New Zealand Merino Baselayer Pant with GussetMinus33 100% Merino Wool Base Layer 706 MidWeight Bottoms Black MediumMinus33 Merino Wool Ridge Cuff Beanie, Charcoal, One SizeMerino 365 Women's New Zealand Merino, Long Sleeve Top, ThumbloopsMinus33 Merino Wool Men's Chocorua Midweight Crew, Charcoal Grey, LargeWoolly Clothing Co. Men's Merino Wool Ultralight Crew (150 GSM)