100% Australian Merino
Nature's performance fabric
Thermoregulating, odor-resistant merino layers built for every day and every season.
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One fabric, engineered for everything you do.
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Customer favorites across the range.
MERINNOVATION Merino Wool Base Layer Set for Men 100% Merino Wool Pajamas Set Thermal Sleep PJS Lite - Midweight Top, Bottom
MERINNOVATION 100% Merino Wool Base Layer Men - Long Sleeve V-Neck Thermal Top
MERINNOVATION 100% Merino Wool Base Layer Men - Long Sleeve V-Neck Thermal Top Merino Wool Men's Shirt
MERINNOVATION 100% Merino Wool Base Layer Men - Long Sleeve Crew Neck Thermal Top Merino Wool Men's Shirt
MERINNOVATION 100% Merino Wool Hoodie Men - Lightweight Thermal Half Zip Sweatshirt
MERINNOVATION 100% Merino Wool Hoodie Men - Lightweight Base Layer Mens Thermal Long Sleeve Half Zip Sweatshirt for Hiking
MERINNOVATION 2 Packs Merino Wool Underwear Men - 100% Merino Wool Boxer Briefs for Men Everyday Breathable Anti-Odor Boxers
MERINNOVATION Men Merino Wool V Neck T-Shirt - Men's Merino Wool Shirt Lightweight Wicking Base Layer Undershirt
MERINNOVATION Women's Merino Wool Base Layer Set
MERINNOVATION Women's Merino Wool Base Layer Set - Thermal Top & Bottom
100% Merino Wool Leggings Women - Thermal Underwear Base Layer Pants
MERINNOVATION 100% Merino Wool Base Layer for Women - Long Sleeve Turtleneck Thermal Top Merino Wool Women's Shirt
MERINNOVATION 100% Merino Wool Base Layer for Women - Long Sleeve V-Neck Thermal Top
MERINNOVATION 100% Merino Wool Base Layer for Women - Long Sleeve V-Neck Thermal Top Merino Wool Women's Shirt
MERINNOVATION 100% Merino Wool Base Layer for Women - Long Sleeve Crew Neck Thermal Top
MERINNOVATION 100% Merino Wool Base Layer for Women - Long Sleeve Crew Neck Thermal Top Merino Wool Women's Shirt
MERINNOVATION Merino Wool Cotton Kids Hoodie for Boys Girls - Thermal Children Hooded Sweatshirt
MERINNOVATION Merino Wool Cotton Kids Hoodie for Boys Girls - Thermal Children Hooded Sweatshirt Midweight Youth Hoddie
Why merino wool?
Thermoregulating
Keeps you warm when it's cold and cool when it's hot — nature's smartest insulation.
Odor-resistant
Wear it for days without washing — merino naturally neutralizes odor-causing bacteria.
Ultra-soft, no itch
Superfine 17.5-micron fibers feel silky against skin — no scratch, ever.
Natural & renewable
100% Australian merino — biodegradable, breathable and grown, not made.
Interactive guide
Find your perfect merino weight
Merino weight = grams per square metre (g/m²). The bigger the number, the warmer the fabric. Tap a weight to see when to wear it.
Featherlight
+15°C and upBarely-there tees and tanks that dump heat fast and dry in a flash. If you run hot — start here.
Shop 165–180The All-Rounder
+5° to +20°COur most popular weight: light enough for the office, warm enough for a cool evening. One tee, three seasons.
Shop 190Midweight
−5° to +10°CNoticeably cozier base layers and long sleeves. Wear solo in fall or under a shell in winter.
Shop 250Expedition
−20° to 0°CMaximum merino warmth for skiing, winter hikes and serious cold. Pair with a 190 base for arctic days.
Shop 320+Loved by 50,000+ customers
Real reviews from people who live in merino.
The softest base layer I've ever owned. Wore it hiking for four days straight — zero smell, zero itch.
Perfect weight for running in shoulder season. Breathes better than any synthetic I've tried, and it still looks brand new after 30 washes.
Bought socks for a Patagonia trip — ended up ordering three more packs for daily wear. Warm, durable, no blisters.
Frequently asked questions
Everything you want to know about merino.
Is merino wool itchy?
No — unlike traditional wool, our superfine 17.5-micron merino fibers are so thin they bend against the skin instead of prickling it. It feels closer to soft cotton than to a scratchy sweater.
How often do I need to wash merino?
Far less than cotton or synthetics. Merino naturally resists odor, so most people wear tees 2–4 times between washes. When it's time: machine wash cold on gentle, lay flat to dry.
Will merino keep me cool in summer?
Yes. Merino is thermoregulating — it wicks moisture and releases heat when it's warm, and insulates when it's cold. One layer, all four seasons.
What do 165, 190 and 250 mean?
That's the fabric weight in grams per square meter (g/m²). 165–180 is featherlight for summer and sport, 190–250 is the everyday sweet spot, and 320+ is expedition-grade warmth.
What's your return policy?
30 days, unworn with tags — quick and hassle-free. US orders over $49.99 ship free. Full details on our Shipping & Returns page.