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Women's Base Layer

Olympus Merino Base Layer 1/2 Zip Long Sleeve

€139,95
Colour: Black
inches
cm
Size Bust Waist Hip
XS 31.1 - 33.1 24.8 - 26.8 34.3 - 36.2
S 33.1 - 35 27.2 - 29.1 36.6 - 37.8
M 35 - 37 29.1 - 31.1 38.2 - 40.2
L 37 - 39 31.5 - 33.5 40.6 - 42.1
XL 39.4 - 42.1 33.5 - 36.2 42.5 - 45.7
XXL 42.5 - 45.3 36.2 - 39 45.7 - 48.8

How to Measure

  • Chest/Bust: Measure around the widest part of your chest/bust
  • Waist: Measure natural smallest point around your middle. Often this is where you bend when touching your toes.
  • Hips: Stand straight and measure around the largest part of your hips.
  • Inseam: Measure inside seam from crotch to bottom hem. 

What does fit mean?

Each style has a 'fit' noted in the product information. Whether it's Slim, Standard or Relaxed, here's how that effects the fit. 

Slim
Standard
Relaxed

A classic performance fit, following the contours of your body. Great for layering. 

Follows the line of your body, but gives you room to move.  

A loose fit for every day comfort, while not being baggy.  

Size Guide
Size: XS
Ultimate warmth. Designed for the coldest days and the biggest adventure. Olympus is our warmest baselayer offering unrivalled warmth to weight ratio and strategically placed mesh panels to ensure breathability.
We use midweight 250 merino wool with added elastane so that Olympus will keep its shape and last longer.
Features

  • Half zip for ventilation
  • Raglan sleeves for ease of movement
  • Merino mesh underarm panels
  • Flatlocked seams to prevent friction
  • Thumb loops.

Fabric & Fit

Fabric Type:

Weight: 250gsm

Blend: 97% Merino Wool 3% Elastane

Fit: Slim

What’s so epic about Merino Wool?

Merino Wool is the OG performance fibre, crushing it since way before oil-derived synthetics arrived. Cool when it’s hot, warm when it’s not, just as epic when wet and never stinks. We’ve tapped into the natural perks of this legend, while adding a new-school spin to meet the needs of mountain bikers, skiers, snowboarders and mission-seekers. 

To ensure the highest standards of animal welfare, environmental care, and social sustainability, we use ZQRX-certified Merino Wool.

Shipping & Returns

This item qualifies for free shipping.
Free delivery within Europe for all orders over €100.

Order are processed and dispatched the next working day. Orders received on Saturdays, Sundays, and Public Holidays will be processed on the following business day.
Target delivery is 2-3 business days.

Returns Information

Returns are accepted within 28 days of purchase provided items are in new and unworn condition.

Restrictions apply, read our full returns policy here.

Reviews

Customer Reviews
4.9 Based on 12 Reviews
5 ★
92% 
11
4 ★
8% 
1
3 ★
0% 
0
2 ★
0% 
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1 ★
0% 
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Customer Photos
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Filter Reviews:
SL
04/06/2025
Sherilee L.
Australia

All in one package

Good looking, comfy and warm. After a full day hiking on the Overland Track in Tasmania, being hugged by these thermals was pure bliss.

Mons Royale Europe Olympus Merino Base Layer 1/2 Zip Long Sleeve - Black Review
JF
02/27/2024
Jana F.
Germany

Perfect, I love it

Perfect quality, nice design, nice to wear.

N
08/22/2023
Nushka
Canada

Good quality merino, well made

I wear a lot of Merino and this is a good quality fabric and the garment is well made. The close to 100% Merino content gives it the properties you can expect from Merino.

Our mission

Nature's Performance Apparel

We're on a mission to create nature's performance apparel that doesn't f*ck the planet and to inspire a life of (action) and adventure.

Learn More