Men’s Thermals, Activewear and Base Layers

Explore Mason William men’s Merino wool base layers, crafted from 100% natural, breathable, and odor-resistant Australian merino wool. Perfect for layering, outdoor adventures, or everyday wear, these base layers provide lightweight warmth, comfort, and performance for all-day use.

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Blue Core-Spun T-Shirt made with Merino wool blend, lightweight and breathable for travel, hiking, or everyday comfort
NEW
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Classic T-Shirt 87 Core-spun

GREY
NAVY
BLACK
$ 90
Blue Merino wool T shirt for men, lightweight and breathable short sleeve top ideal for hiking, travel, or everyday wear
NEW
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Classic T-Shirt 170g

BLACK
$ 90
Red Merino wool long sleeve top featuring a lightweight crew neck design, breathable and odour-resistant for outdoor or everyday wear
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Long Sleeved Crew Neck Top 180g

Chili Red
$ 95
Brown Merino wool top featuring a lightweight, breathable long sleeve design ideal for travel, hiking, and daily layering comfort
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Long Sleeved Crew Neck T-Shirt Tee 180–200gsm

black navy
DEEP SEA
GREEN
HEATHER GREY
INDIGO
+6
LIGHT MARLE GREY
NAVY
OCEAN BLUE
Rust
STEEL BLUE
Storm Blue
$ 95
Merino wool thermal top lightweight base layer for winter warmth
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Long Sleeved Crew Neck Top 200g(Rib)

CHARCOAL
HEATHER GREY
NAVY
BLACK
Blue
$ 100
Crew neck long sleeve top soft stretch layering shirt
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Long Sleeved Crew Neck Top 230g(Rib)

Heather Navy
$ 110
Classic Crew Neck Top for Men and Women
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Long Sleeved Crew Neck Top 250g(Rib)

Storm Grey
$ 115
Merino wool long sleeve shirt soft breathable base layer for winter warmth
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Long Sleeved Crew Neck Top 180g（Rib）

CHARCOAL
FRECH NAVY
LIGHT MARLE GREY
Rust
BLACK
+4
Mist Green
Olive Brown
Sage grey
Slate Grey
$ 95
Merino wool briefs mens soft breathable odor resistant underwear
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Men’s Boxer Shorts

$ 35
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Sleeveless Crew Neck Top

White
BLACK
$ 59
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Men’s Collared Polo Top – Short Sleeve (180g)

DEEP SEA
KHAKI GREEN
Royal Blue
Sage Green
$ 90
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Everyday Socks

CHARCOAL
Chestnut
HONEY BROWN
INDIGO
KALE GREEN
+5
Mid Grey
NAVY
SOFT GREY
Beige
BLACK
$ 15

Our Fabrics

All our superfine merino wool fabric is sourced from 100% Australian farms whose sheep are non-mulesed. We ensure that our wool is of the highest quality and is sustainably and ethically grown. [🔗Learn more]