Thermal and winter socks
Heavier gauge in wool or brushed blends for cold-weather wear.
Warmth comes from trapped air, not from thickness.
A thermal sock is knitted at a heavier gauge, usually in wool or a brushed blend, so the structure holds a layer of still air against the foot. Thickness is a side effect of that, not the mechanism.
The distinction matters commercially. A sock made thick with cheap acrylic feels warm in the hand and cold on a mountain, because it compresses flat inside a boot and the air is gone.
Who orders thermal socks.
Buyers in cold markets, and buyers whose customers work outdoors regardless of market.
Hiking, skiing and mountain ranges, sold on wool content and on how the sock performs when it gets damp.
Cold storage, agriculture and outdoor trades, bought on durability and wash cycles as much as on warmth.
Seasonal high-street lines that need to look substantial on the shelf at a price point.
What to settle before we quote a thermal sock.
Wool content is the first question and it decides most of the price.
Which wool, and how much. Merino is fine, soft against skin and expensive. Coarser wools are warmer per gram and scratchier. A blend percentage on its own does not describe the sock; the wool type has to come with it.
Brushed interior, or not. Brushing raises the fibres inside the sock and adds real warmth. It also sheds slightly in the first washes, which needs saying on the packaging.
The boot it goes in. Thermal socks are worn inside footwear that is already snug. A sock that adds two millimetres of loft can make a well-fitting boot cold by restricting circulation, which is the opposite of the intent.
Wash instructions. Wool blends need a stated wash temperature. Getting this wrong on the label is the most common reason a good thermal sock comes back shrunk.
Specification.
What applies to every order of this construction. Anything not listed here is set by your tech pack.
| Minimum order | 200 pairs per colour and size range. From 120 pairs on request, at a higher price per pair. |
| Size range | Women 35–40 and men 40–45 as standard, split into more sizes on request. Children’s sizes to your size chart. |
| Sampling | 10 to 20 days. USD 100 per design on a first order, credited against the order if it goes ahead. |
| Production | Delivered within 60 days of sample approval. Urgent small runs in 20 to 40 days. |
| Knitting machines | Our workshop runs 60 knitting machines, from 120 to 200 needles. |
| Yarns available | Cotton, wool, cashmere, silk, bamboo, mercerised cotton, modal, viscose, lyocell, Tencel, polyamide, polyester, acrylic, elastane, copper, silver |
| Branding | Knitted-in logo in up to seven colours a row, silicone print, under-sole transfer print, embroidery, header cards and packaging to your artwork |
| Certification | Facility certified to ISO 9001, 10002, 14001 and 45001. Yarn from Oeko-Tex, GOTS and GRS certified spinning mills. |
Related constructions.
Buyers who brief us on thermal and winter socks usually weigh these against it.
Terry and cushioned socks
Pile loops knitted into the sole for impact absorption and warmth.
Knee-high socks
Full length to below the knee. Formal wear, school uniform and team kit.
Crew socks
The standard length, sitting just above the ankle bone. Rib cuff, flat or terry foot.