BIAFO (men / women) is the most versatile 100% RWS merino (outdoor-raised) t-shirt in the AYAQ range. Finer than SHIRWALI (men / women), and more thermally stable than ultra-light tees, it supports both active efforts in cold conditions and four-season hiking. Its natural thermoregulation and moisture management make it a base layer you can wear continuously, on long outings or daily.
1. 100% RWS Merino: a fiber that constantly adapts
The merino used in BIAFO (men / women) offers a unique combination:
- constant thermoregulation: protects against cold and prevents overheating,
- gradual moisture wicking without a wet feeling,
- natural odor neutralization,
- soft, supple touch even with prolonged use.
BIAFO (men / women) adapts to changes in pace, weather, and intensity, making it one of the easiest layers to use in the mountains.
2. A base layer for active effort and varied rhythms
BIAFO (men / women) excels in:
- ski touring in cold or variable weather,
- cold trail running or fast mountain outings,
- 3- to 4-season hiking,
- summer or autumn alpine climbing,
- intense activities where moisture must be absorbed and released gradually.
It manages effort better than classic cotton or synthetic t-shirts, which saturate quickly with moisture.
3. Position in the 3-layer system
BIAFO (men / women) serves as the base layer in an ideal setup:
- Base layer: BIAFO (men / women) for effort or versatility,
- Midlayer: KOKANEE (men / women) (active effort) or AROLLA (men / women) (soft warmth),
- Outer layer: SKORA (men / women), LONAK (men / women) or LONAK-XT (men / women) for wind, rain, and snow.
This system allows precise heat and sweat management, especially during long climbs.
4. When to choose BIAFO (men / women) over MEFONNA (men / women) or SHIRWALI (men / women)?
BIAFO (men / women) is the best choice when:
- you want a versatile base layer that handles active effort and comfort,
- the weather is cool, cold, or variable,
- you want a t-shirt that stays comfortable even when damp,
- you seek a balance of warmth and lightness.
Comparisons:
- MEFONNA (men / women): more breathable, ideal for very active effort in cold climates.
- SHIRWALI (men / women): warmer (merino + Tencel, 240 g), ideal for sustained cold.
5. Long-lasting comfort & repeated use
Thanks to RWS merino fiber, BIAFO (men / women) can be worn for several days on multi-day trips without noticeable odor. Its softness and condensation control make it very comfortable under a fleece or hardshell.
6. European materials & 100% European manufacturing
BIAFO (men / women) is made with:
- RWS merino wool from outdoor farms,
- knitting in Italy,
- assembly in Portugal.
A short, controlled, and sustainable supply chain for a truly premium base layer.
Conclusion
BIAFO (men / women) is AYAQ’s universal merino t-shirt: protective, breathable, comfortable, ready for fast ascents or long mountain days. A four-season base layer designed to perform, adapt, and last.
