Mons Royale Olympus 3.0 Half Zip Mens

Designed for the coldest days and the biggest adventures, Olympus is Mons Royale's warmest baselayer offering unrivalled warmth to weight ratio and strategically placed mesh panels to ensure breathability.

Mons Royale use midweight 250 merino wool with added elastane so that Olympus will keep its shape and last longer.

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Product Description


  • 250gsm


  • 250 Midweight Merino is our warmest baselayer weight for the coldest conditions
  • Mons slim fit
  • Raglan sleeves for ease of movement
  • Merino mesh underarm panels
  • Half zip for ventilation
  • Thumb loops

Size Guide (in Centimetres)

Size Chest Waist Hip In-leg
S 90-97 76-83 89-96 79-81
M 97-104 83-90 96-103 81-83
L 104-111 90-97 103-110 83-85
XL 111-118 97-104 110-117 85-87


Here to Help

Do you need some help with size, fit or colour? Or do you have a general question about this or any other item on EcoSki?

We'd be happy to help you.

Please text or call the team on 07843 998931 between 9am and 3pm or text anytime outside of these hours. Alternatively send us an email.

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About the brand

From Lake Wanaka New Zealand, Mons Royale designs performance merino clothing for the mountains.

It all started with pro freeride skier Hamish Acland. Over years of travelling to competitions, shoots and surfing friends' couches to chase the snow, Hamish found himself wondering how he could maximise his adventure while packing with limited space. Most skiers and snowboarders know this problem well. Skis, boots, outerwear and backcountry kit get packed first. Then the washables; socks, underwear and baselayers. And finally, some street clothes to fill out the bag.

Ten years on Mons Royale has a global fanbase that includes the world’s best action sports athletes, Olympians and adventurers in the most far-reaching corners of the Earth. Mons is stocked in over 600 retail stores globally with offices in Innsbruck, Vancouver and Wanaka.

Mons Royale came from believing a brand could be built by designing technical performance products without compromising style.

A decade later, Mons continues to step up the art of disruption by fearlessly pushing design-led boundaries with each new range.

Merino are the oldest farm-bred sheep in the world. These wooly badasses reside high in the alpine hills of New Zealand, where the climate is harsh.

When it’s hot; it’s blazing. And when it’s cold; it’s got bite. But merino actually thrive in these conditions, thanks to their wool. Merino wool is a naturally better performance fibre because it has evolved to withstand extremes. This gives it some incredible properties.

Benefits of Merino Wool

  • Anti-odour: Merino fibres have a crimped structure that make it nearly impossible for bacteria to attach to the wool. As a result, merino apparel stays fresh and odour-free.
  • Warmth-to-weight Ratio: Merino wool has a very high warmth-to-weight ratio. This means that merino is warm, without bulk. It also insulates even when wet, so no matter how bad the conditions, merino stays warm.
  • Temperature Regulation: Merino has the highest moisture absorption capacity of any fabric. This gives it the ability to move moisture away from the body faster. So when it’s cold, you’ll stay warm and dry. But when it’s hot, it keeps you cool.
  • Breathable: Merino wool fibres are much thinner than ordinary wool fibres. Therefore, merino wool garments are incredibly breathable and fast-drying.
  • Soft The fine gauge of merino also means that it’s super soft next to your skin and doesn’t itch like traditional wool.

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