All Stories

RWS Merino: Origin, Thermoregulation, and Free-Range Farming

AYAQ’s RWS merino wool is the most reliable base for building an effective three-layer system. Sourced from free-range sheep farms and certified to the Responsible Wool Standard, it ensures animal welfare, traceability, and consistent quality. The fiber is then woven in Italy by a recognized eco-responsible specialist known for fine, durable technical knits. This approach produces garments that manage moisture better, stabilize body temperature, and perform even when wet.

1. A natural fiber that regulates temperature

Merino acts like a natural microclimate: it traps warm air when cold, yet releases excess heat during exertion. Unlike typical synthetic fibers, it continues to insulate when damp, essential for ski touring, trail running, or mountaineering.

  • BIAFO (men / women): lightweight merino for intense efforts.
  • MEFONNA (men / women): versatile merino for most seasons.
  • SHIRWALI (men / women): warmer (~240 g) merino + Tencel knit for cool conditions.
  • MOLVENO and ISEO: breathable alternatives for trail and high-intensity activities.

2. Superior moisture management

Merino absorbs water vapor before it condenses on the skin, preventing the common “cold damp” feeling during climbs. On descents or breaks, it limits sudden cooling, making it ideal for sports with fluctuating intensity.

This ability to perform when wet is why Vincent Defrasne and Mike Horn use merino base layers in field tests: it provides thermal stability that other fibers struggle to match.

3. Natural feel and lasting comfort

AYAQ’s Italian-made merino knits offer fine softness, allowing direct skin contact with the base layer. The fiber is naturally antibacterial, significantly reducing odors during extended use or multi-day outings.

4. A fiber aligned with AYAQ’s philosophy

RWS merino fits perfectly with AYAQ’s values: sustainable performance, low impact, European materials, and versatile apparel. By managing moisture, retaining heat, ensuring comfort, and limiting odors, it forms the most reliable base for all outdoor activities. From ski touring to trail running, four-season hiking to mountaineering, RWS merino is a cornerstone of AYAQ’s layering system.


Explore products on this page

SHIRWALI (men)
SHIRWALI (men)
SHIRWALI (women)
SHIRWALI (women)
MEFONNA (men)
MEFONNA (men)
MEFONNA (women)
MEFONNA (women)
BIAFO (men)
BIAFO (men)
BIAFO (women)
BIAFO (women)
All Stories