Men's OG Long Sleeve - 100% Merino Wool, Gibraltar
Men's OG Long Sleeve - 100% Merino Wool, Gibraltar
In stock
Couldn't load pickup availability
These are the perfect merino base layer pants. I'm 173cm tall (5'8") and got the 2XL-- the pants are not too long, and they'd still work for taller people. The fit is fantastic and they're so breathable. I'm usually on the warm side, and until I got these pants, I wore shorts around the house, but now I wear these all the time! I raved about them so much that my partner ordered one herself (along with a top). I'll continue to tell friends and family about Merino365, and I'll be buying more products from them in the future.
This 1/4 zip top has become my everyday top in cool and cold weather. I'm 173 cm tall (5'8"), so the sleeves fit nice and relaxed. It's so soft and warm, and it doesn't fit skin-tight like many other brands. It's relaxed enough to wear every day, but it's also perfect as a base layer under mid and shell layers. Shipping was smooth to the U.S. I highly recommend Merino365! Fantastic business!
Bought two of the OG long sleeve for our family trip to Europe.
We are currently in Muonio, Lapland, 275km north of the Arctic circle ❄️❄️ and they have kept me toasty and warm!
We are supplied with extreme weather gear for the conditions, but it all starts with the right base layer - these are great.
10/10 recommended.☃️
I've worn this and it's so cozy. Quality is really good and the customer service was top notch. I would highly recommend Lucy and her products at Merino 365
Size correct; perfect fit
Size Chart
Size Chart

- Easy returns
- Timeless Fit
- New Zealand merino
The original. The essential. Since 2016, the Men's OG Long Sleeve has been a go-to for thousands of travellers, runners, hikers, and everyday adventurers. Crafted from 100% New Zealand merino, it’s the first thing you’ll reach for—and the last thing you’ll want to take off.
Features
- 100% New Zealand Merino Wool – 200gsm
- Superfine and soft – no prickle, itch or irritation
- Natural stretch for full range of movement
- Moisture-wicking, breathable and odour-resistant
- Temperature-regulating – stay warm or cool, depending on conditions
- Perfect base layer for travel, outdoor adventures or everyday wear
- Designed in New Zealand, made in China or Fiji
- Easy care – machine washable on wool cycle
Description
If you’re new to merino, start here. The Men's OG Long Sleeve is the foundation of any good travel, training, or daily wardrobe. Built from 190gsm of breathable, temperature-regulating merino, it keeps you warm in the cold, cool in the heat, and comfortable through all the in-between.
Whether you're packing light for a trip, heading for a run, or layering up for a snow mission, this is the shirt that does it all—without the bulk of traditional base layers.
Merino 365 garments naturally flex and move with you, offering comfort without restriction, even when worn tight to the skin. Soft enough for next-to-skin wear and tough enough for repeat use—this is your daily driver, year-round.
Join the thousands who’ve made this their base layer of choice since 2016.
Fabric & Care
- Fabric: 100% Merino Wool, 190gsm
- Care: Machine wash cold on wool/delicate cycle with wool detergent. Lay flat or air dry.
- Origin: Made in China or Fiji using NZ-grown merino
Why Merino 365?
Born in New Zealand, tested by nature. Merino 365 takes the legendary properties of merino wool—breathability, softness, warmth—and builds performance-first clothing you’ll actually want to wear every single day of the year.
Share

Bought two of the OG long sleeve for our family trip to Europe.
We are currently in Muonio, Lapland, 275km north of the Arctic circle ❄️❄️ and they have kept me toasty and warm!
We are supplied with extreme weather gear for the conditions, but it all starts with the right base layer - these are great.
10/10 recommended.☃️
Wow, what an awesome adventure!!
Haven’t worn my Christmas present yet, but pricing and shipping were excellent
Happy withthe colour and sizing.
Excellent Xmas pressie , very happy with the look & colours. They are wrapped for giving
fantastic quality and fits really well