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Men Merino Seamless Longsleeve Shirt

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Our men's Merino Seamless Long-Sleeve Baselayer is made in Portugal using state-of-the-art 3D knitting technology. Seamlessly integrated zones provide extra durability and maximum breathability, ensuring optimal comfort and perfect temperature regulation.

Perfectly paired with: our Men Merino Seamless ¾ Leggings or our Men Merino Seamless Leggings.


Size chart

120.26 CHF 120.26 CHF 120.26 CHF

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Color: Caviar@Midnight
Layer: Base Layer
Material: merino

 Free delivery within CH and the EU
 Buy now and receive the product in 3–5 days

Detailed description

The base layer should above all be comfortable and odor-resistant. Our Merino long-sleeve base layer is made from 79% soft Merino wool. The material used is extremely lightweight and therefore very comfortable to wear. A special nylon core (21%) gives the yarn excellent elasticity, while also reinforcing the fabric to make it more durable.

We use ultra-fine 17.5-micron Merino wool from the South Island of New Zealand for all our Merino products. This wool comes from ethically raised, mulesing-free sheep. It is spun into a unique yarn featuring a stretchable nylon core (Nuyarn® Technology). Nuyarn makes our products loftier (+35%), stronger (+50%), and warmer (+35%) than fabrics made from 100% Merino wool. In addition, our garments dry much faster. The nylon core further enhances the stability of our products, contributing to their long-lasting quality and sustainability.


  • Longer cut
  • Matte Finish
  • Stretchable
  • High-quality, superfine yarn for soft wearing comfort (approx. 17 µm, non-itchy)
  • Merino blend with nylon (7%) for improved durability, shape retention, and ease of care
  • Naturally elastic, wrinkle-free, and machine washable
  • Renewable, biodegradable
  • Mulesing-free
  • Clean lines & minimalist colors
  • Minimalist & timeless
  • Dries 5× faster than conventional merino wool
  • 35% stretchier than conventional merino wool
  • 35% warmer than conventional merino wool
  • Natural odor control
  • Extended lifespan through synthetic reinforcement

Fabric composition: 79% Merino wool, 21% nylon Fabric weight: 230 g/m² (midweight)

Merino is a special type of wool that naturally cleans itself. For this reason, Merino products need to be washed much less frequently and can simply be refreshed by hanging them in the air overnight. If the garments do need to go in the washing machine, they should always be turned inside out to reduce pilling. We recommend washing them cold or at a maximum of 40 °C to minimize shrinkage. Since wool is a natural fiber, it tends to shrink more during the first wash compared to synthetic fabrics. Tip: Soak the garment in cold water for about 12–24 hours before the first machine wash. Use the gentlest spin cycle possible in the machine. Regular liquid or powder detergents are fine — do not use wool detergent, fabric softeners, or bleach. Wash products sorted by color. Do not tumble dry; let them air dry in the shade.

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