Merino thermals and merino wool base layers for men and women, for winter, work and the outdoors.
Merino wool thermals keep you warmer than synthetic base layers at the same weight, breathe naturally, and stay odour-free for days — which is why they're the go-to winter layer across Australia's cold regions. At Darrahopens you'll find men's and women's merino wool blend thermal tops, leggings, long johns, and heavy-duty merino socks, with Australia-wide shipping. Sizes range from 10–20 (women) and S–3XL (men).
How to choose merino thermals
- Tops & long sleeve base layers — wear next to skin under work gear or winter clothing; merino regulates temperature so you stay warm without overheating.
- Leggings & long johns — full-length warmth for outdoor work, camping, and winter sports.
- Merino socks — double-cushion heavy-duty pairs popular with tradies; 90% wool.
Frequently asked questions
Are merino thermals warmer than polyester thermals?
Weight for weight, yes — merino fibre traps more air and keeps insulating even when damp, unlike most synthetics.
Can you wear merino thermals all day?
Yes. Merino is naturally odour-resistant and breathable, so it stays comfortable for all-day wear indoors and out.
How do I wash merino wool thermals?
Cold gentle machine wash or hand wash, dry flat in shade. Avoid tumble drying, which can shrink wool.
Do you ship Australia-wide?
Yes — all thermals ship Australia-wide from Darrahopens.