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Mason William Merino Product Details
Product description
100% Superfine Merino Wool (17.5μm)
Made with 17.5-micron Merino wool for exceptional softness, breathability, and next-to-skin comfort. Naturally antibacterial and gentle even on sensitive skin.
180gsm Midweight Fabric
Lightweight yet insulating, the 180gsm fabric is ideal for fall and winter layering—warm without bulk.
Tailored Fit with 3D Ergonomic Cut
Precision-fit design for freedom of movement and a sleek, body-hugging silhouette that layers comfortably under pants or snow gear.
Flyless Design for Clean Lines and Comfort
Thoughtfully designed without a front fly, ensuring a smoother fit and greater comfort during outdoor activities or long wear.
Moisture-Wicking, Odor-Resistant, Thermoregulating
Keeps you warm and dry without overheating—perfect for active or everyday use.
Classic Black Color
Simple and versatile, easy to pair with any top layer.
Features
- 100% Superfine Australian Merino (180g/m2 17.5 microns)
- Certified Oeko-Tex 100
- Regulates body temperature
- Tailored Fit with 3D Ergonomic Cut
- Flyless Design for Clean Lines and Comfort
- Flatlock seams to minimize chafing
- Non itch comfort
- Naturally odour resistant
- UPF 50+
Customer Reviews

We acknowledge the Traditional Owners and Custodians of lutruwita (Tasmania), on whose lands Mason William Merino is proudly based. We recognise their deep and continuing connection to land, waters, and culture. We pay our respects to Elders past, present and emerging.
Our Store
- 📍 1/334 Elizabeth street North Hobart TAS 7000
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