• BIAFO 100% Merino T-shirt — Red Sienna
  • BIAFO 100% Merino T-shirt — Red Sienna
  • BIAFO 100% Merino T-shirt — Red Sienna
  • BIAFO 100% Merino T-shirt — Red Sienna
  • BIAFO 100% Merino T-shirt — Red Sienna
  • BIAFO 100% Merino T-shirt — Red Sienna
  • BIAFO 100% Merino T-shirt — Red Sienna

BIAFO 100% Merino T-shirt

Technical base layer 100% merino (150g/m²)

$105
$105
Color : Red Sienna
Size : L - EU : 42 / US : 10 Guide
Our model is 170cm tall and wears size XS.
She weighs 50kg and wears size XS top and XS bottom.
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Fast Delivery and Easy Returns
The wool in your Biafo is sourced from high-quality Merino farms. This 100% virgin Merino wool garment weighs 150 g/m² and features an extra-fine 17.5-micron yarn for exceptional comfort, with flatlock seams to prevent irritation. Designed for sustained activity, its odor-resistant properties make it ideal for multi-day outings.

Weight : 127 g

PERFORMANCE

Warmth9 / 10
9 / 10
Breathability10 / 10
10 / 10
UV protection10 / 10
10 / 10
Merino Wool10 / 10
10 / 10
Lightweight10 / 10
10 / 10

Activities

  • 10/10 Mountaineering
  • 10/10 Ski Touring
  • 10/10 Alpine Skiing
  • 10/10 Hiking
  • 7/10 Everyday
Technical Features

Design & Sourcing

European natural fibers: Use of virgin wool produced in Europe, ensuring optimal and durable technical quality.

Ergonomics & Performance

  • Absolute softness: Premium knit made from extra-fine yarn for a soft, non-itchy feel, even directly on the skin.
  • Thermal regulation: Natural properties of merino wool providing optimal moisture and body temperature management.
  • Natural odor control: Intrinsic antibacterial properties of high-quality virgin wool, ideal for intensive multi-day use.
  • Freedom of movement: Raglan sleeves and stretch knit structure offering excellent elasticity and breathability during activity.
  • Ergonomic crew neck: Comfort suited for both effort and rest. Features a fine elastic band for precise fit and enhanced durability.
100% eco-designed collection

Your Merino wool comes from farms with free-range animals and no mulesing. 100% of processing (combing, carding, spinning, dyeing, weaving...) is done near the Alps. Final assembly is in a European workshop powered entirely by green energy.

Material composition

  • Main fabric: 100% virgin Merino wool

Portuguese fabric made from New Zealand wool

  • Extra-fine 17.5 micron yarn
  • Natural wool from sustainable, ethical farms
  • Certified non-mulesed wool
Care Instructions

Warranty, Care & Repair

Crafted with meticulous care from technical, mountain-friendly materials, your Biafo T-shirt comes with a 3-year warranty.

Washing:

  • First 5 washes: Cold water only.
  • Subsequent washes: Gentle cycle (max 30°C).
  • Preparation: Wash garment inside out.
  • Detergent: Use wool-specific detergent.
  • Spin: Avoid machine spinning and never wring the garment.

Drying:

  • Method: Air dry flat or on a hanger.
Fast Delivery and Easy Returns

At your place by

Delivery in 24 to 48 hours for France, up to 4 days for Europe, free from €100 order. Easy and free returns within 30 days.

CONCEPTION

EXTRA FINE THREAD

Jersey made from extra fine yarn for a soft, second-skin feel that doesn’t itch and protects against UV rays

ODOR CONTROL

COMFORT

Natural properties of high-quality virgin Merino wool that prevent odors and allow multi-day outings

ODOR CONTROL

COMFORT

Natural properties of high-quality virgin Merino wool that prevent odors and allow multi-day outings

RAGLAN SLEEVES

TECHNICAL PERFORMANCE

Raglan sleeves for maximum freedom of movement and enhanced comfort

TECHNICAL KNIT & CREW NECK

PRACTICALITY

Technical knit offering stretch and breathability, ideal for long, demanding hikes, combined with a crew neck featuring a fine elastic band for perfect fit and durability

TECHNICAL KNIT & CREW NECK

PRACTICALITY

Technical knit offering stretch and breathability, ideal for long, demanding hikes, combined with a crew neck featuring a fine elastic band for perfect fit and durability

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WOMEN - Size Guide

Enter your measurements in cm. You may leave a field blank if unknown.

These values are neither sent nor stored.

Size GuideXSSMLXL
EU3638404244
US4681012
Height (cm)162 - 165165 - 168168 - 173173 - 176176 - 179
Chest circumference (cm)86 - 8990 - 9394 - 9798 - 101102 - 105
Waist circumference (cm)62 - 6667 - 7172 - 7677 - 8182 - 86
Hip circumference (cm)88 - 9293 - 9798 - 102103 - 107108 - 112
Schéma de mesure pour femme

Comment bien mesurer pour choisir vos vêtements AYAQ ?

1
Chest circumference

Measure horizontally at the most prominent point of the nipple.

2
Waist circumference

Measure horizontally at the narrowest point of the body.

3
Hip circumference

Measure horizontally at the widest point of hips/buttocks.

View our fitting guide

Not the right size?

You can exchange your item for a different size free of charge within 30 days of delivery. For more details, visit our page.Refund policy.