Women's Merino Thermal Set 250 Black
Merino works as a system, so most people end up buying more than one piece. We would rather reward that than pretend it is a coincidence.
One code at a time — we apply whichever saves you more.
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Women's Merino Wool Thermal Set
Meet the Merino.tech Women’s Merino Wool Base Layer Set — your essential layer for warmth, breathability, and all-day comfort.
Crafted from 100% superfine Merino wool, this base layer set delivers superior thermoregulation, adapting naturally to your body’s needs. Stay cozy in the cold and cool in the heat — Merino’s microscopic fibers trap warmth without bulk while letting your skin breathe freely.
Sweat? No problem. The wool’s advanced moisture-wicking structure moves perspiration away from your skin, keeping you dry even during intense hikes or ski sessions. Its natural antibacterial properties prevent odor, so you can wear it multiple days in a row — perfect for travel and adventure.
Soft, stretchy, and lightweight, this set moves with you. The flat seams prevent irritation, while Merino’s natural elasticity ensures a perfect fit every time. With built-in UV protection, antistatic comfort, and an eco-friendly origin, it’s performance you can feel good about — naturally.
Washing and Drying Instructions
- Turn Inside Out
- Machine Wash Cold: Gentle cycle with like colors
- Detergent: Mild or wool-specific
- Lay flat to dry
- Storage: Wash before storage and keep in a dry place, using airtight containers or vacuum-sealed bag to prevent moth.
- Do NOT Use: Fabric softener or bleach!
- 30 Day Satisfaction Guarantee
- 1 Year Warranty
Embark on your journey with the Merino Midweight, a pinnacle in base layer excellence. Our core base layer fabric sets the standard as the top choice in the market, renowned for its unparalleled warmth, plush softness, and impeccable fit. This collection of base layers and Merino wool apparel is specifically designed for cold-weather activities, prioritizing both warmth and breathability.
Immerse yourself in the comfort of our 100% Merino wool construction, engineered to effortlessly wick moisture away from your skin while still in vapor form. This innovative technology ensures you stay consistently warm, dry, and odor-free throughout the day. Merino.Tech: where tradition meets technology, creating a seamless blend of style, comfort, and performance. Start with a great base – start with Merino.Tech.
WHY MERINO WOOL
INSULATES WHEN WET
Wool has the remarkable ability to absorb up to 30% of its weight in moisture without ever feeling wet or sticky. In the event that it does become wet, wool outperforms cotton and polyester materials by providing superior insulation.
ANTI-MICROBIAL
Merino Wool fibers possess a natural ability to repel bacteria in moisture or sweat, effectively wicking it away. This means you can wear our products without worrying about foot fungus or unpleasant odors.
FIRE RESISTANT
Merino Wool offers excellent insulation against high temperatures and has a natural resistance to catching fire. In the rare event of ignition, it self-extinguishes without melting and adhering to the skin, unlike synthetic fabrics.
MOISTURE WICKING
Merino Wool regulates moisture levels on your skin by absorbing any perspiration or sweat from your body, allowing it to evaporate from the fabric into the surrounding atmosphere.
UV PROTECTION
Leave your sunburn worries behind as you ascend to sunlit peaks. Our lightweight layers provide a UPF rating of 25, while the midweight and expedition options offer an even higher UPF rating of 50+
RENEWABLE
Merino Wool boasts a minimal environmental footprint and seamlessly reintegrates into the natural world. Shear a merino sheep in the morning, and by afternoon, they're happily grazing their way towards renewing next season's wool clip
Questions people ask about merino
What is merino wool, and what makes it different from regular wool?
Merino wool comes from Merino sheep and is measured in microns — the thickness of a single fibre. Merino.tech uses 17.5 micron Australian merino, which is roughly a third the thickness of the coarse wool most people remember from old jumpers. Finer fibres bend against the skin instead of pressing into it, which is why merino feels soft rather than scratchy while still insulating, breathing and resisting odour naturally.
Is merino wool itchy?
No. Itch is caused by fibre diameter, not by wool itself. Fibres above roughly 22 microns are stiff enough to trigger the prickle response; ours measure 17.5 microns, well under that threshold. Every piece here is 100% Australian merino with no synthetic blend in the body fabric, so there is nothing rough sitting against your skin.
How do I wash merino wool without ruining it?
Turn the garment inside out, machine wash cold on a gentle cycle with like colours, and use a mild or wool-specific detergent. Lay it flat to dry. Never use fabric softener or bleach — softener coats the fibre and destroys the breathability you paid for. Merino resists odour, so you can wear it several times between washes, which is the easiest way to make it last.
What weight should I choose for a base layer set?
250 GSM is the answer for most people — it carries from the first frost through midwinter and works while moving or sitting still. Choose 165 if you run hot or plan high-output activity, and 320 if you are outdoors in deep cold without much movement. A set gives you the matched top and bottom in one weight, which is simpler than mixing.
Does merino wool shrink?
It can, but only under heat and agitation. Hot water and a tumble dryer cause the scales on the fibre to lock together permanently. Cold water, a gentle cycle and flat drying prevent it entirely. Follow that and the garment keeps its shape for years.