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View allThe power of merino wool
All Natural
Crafted from ethically grown Australian merino—natural, renewable, and biodegradable.
Odour-Resistant
Naturally antimicrobial. Odour-resistant. Stay fresh, all day long.
UV Protection
Merino wool is a naturally UV resistant material to keep you protected from the sun.
Super Soft
Softer than you'd expect. No itch. Just like wearing a cloud. Experience the ultimate comfort with our Merino wool activewear, perfect for all-day wear.
Easy Care, Effortless Comfort
No ironing required. Easy care & machine washable. Our Merino wool clothing is designed for effortless comfort and long-lasting wear.
Breathable & Temperature Regulating
Merino wool keeps you cool in the heat and warm in the cold. Its natural ability to regulate body temperature means you can pack lighter and stay comfortable in any weather.
Merino made with heart
Mason William Merino is a Tasmania-based merino wool clothing brand, designing premium Australian merino wool garments — lightweight, sustainable, and machine-washable.
Crafted from ultra-fine merino wool fibres, our garments offer exceptional softness, delivering comfort and performance for everyday wear, travel, running and outdoor adventures — all year round.
- Premium Australian merino, designed in Tasmania
- Ultra-fine 16.5–18.5µm fibres — soft, with no itch
- Lightweight, breathable & temperature-regulating
- Machine-washable — easy everyday care
- OEKO-TEX® & RWS certified, 100% Australian wool

A wool for every life.
Micron measures the diameter of a single wool fibre. Smaller is softer; larger is more durable. We weave three.
16.5µm Ultra Fine
For sensitive skin & next-to-skin luxury.
17.5µm Everyday
Our most-loved gauge, work to weekend.
18.5µm Active
Durable enough for the trail.
Wear it. Feel it. Love it.
Absolutely love my Merino wool top! It's so versatile – I wear it to the gym, to brunch, and even on chilly nights. Worth every penny!
The quality of these clothes is outstanding! I've never felt more comfortable while still looking stylish. Merino wool is a game changer!
The best Merino wool I've ever worn! So soft and breathable. Perfect for all my workouts and casual outings. Highly recommend!
