Therm-ic Ultra Warm Nordic S.E.T® heated cross-country socks
£55.99
In stock
Goes well together
Therm-ic Ultra Warm Nordic S.E.T® heated cross-country socks, £55.99
+ Therm-ic S-Pack 2400 batteries for heated socks, 2-pack, £67.99
Total £123.98
£55.99
Therm-ic Ultra Warm Nordic S.E.T® heated cross-country socks
Shipping from £3.99 · Choose your delivery option at checkout.
- 14-day right to cancel
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- 30-day right to reject
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For cold mornings on the track
Thin cross-country boots let the cold in. With the heat on level 1 or 2 you keep your toes warm the whole session.
Heat you can't see
The S.E.T® line is woven in and runs around the toes. You don't see it or feel it in the boot.
Battery on the cuff
The S-Pack snaps onto the outside of the cuff. The button is easy to reach under your trouser leg.
Product FAQ
Are batteries included?
No, the socks are sold without batteries. They run on Therm-ic S-Pack batteries, which snap onto the cuff: S-Pack 2400, S-Pack 3000B or S-Pack 4000B (the last two can also be controlled with Therm-ic's app via Bluetooth). The batteries are available here in the shop.
Which size should I choose?
Go by your shoe size (EU): 35–36, 37–38, 39–41, 42–44 or 45–47.
How do I wash the socks?
Remove the batteries first. Turn the socks inside out and wash by hand or in the machine in a laundry bag, at 30 °C and 400 rpm at most. No bleach, no fabric softener and no tumble dryer: dry them flat, not on a radiator.
Is the heat safe, and can I sleep in them?
Do not sleep with the heat on. Start on level 1 or 2: Therm-ic advises against leaving level 3 on for more than a few minutes, as the skin can get too warm. Check regularly for redness. If you find it hard to feel heat and cold, for example with diabetes or poor circulation, or if you have sensitive skin, ask a doctor before using them. Children should only use them under adult supervision and on the lowest level.
How fast will it arrive, and can I change my mind?
Delivery options and times are on our Delivery page. You have a 14-day right of withdrawal and a 3-year right to complain – see the Returns page.
Description
Cross-country skiing in severe cold often means thin boots and cold toes. Ultra Warm Nordic is Therm-ic's thin, knee-high heated sock for cross-country skiers: a 2 mm S.E.T® heating line runs around the toes and warms without changing the fit.
The sock contains merino wool, which regulates heat and moisture and can absorb a third of its own weight in moisture before feeling wet, according to Therm-ic. Polyamide fibres around the foot and leg give support and stability during your session.
The socks are sold without batteries and run on Therm-ic's S-Pack 2400, 3000B or 4000B, which snap onto the cuff. You choose between three heat levels; with the S-Pack 2400 heat lasts up to 11 hours on the lowest level, according to Therm-ic.
For recreational skiers on cold tracks, for long tours and for anyone who wants warm toes without thick socks.
Features
- 2 mm S.E.T® heating line around the toes
- Made for thin cross-country boots
- Merino wool that regulates heat and moisture
- Knee-high for protection from the cold
- 3 heat levels, up to 20 h on level 1 with S-Pack 4000B according to Therm-ic
- Sold without battery – fits S-Pack 2400, 3000B and 4000B
Specifications
| Heating technology | S.E.T® (thin heating line around the toes) |
|---|---|
| Heat levels | 3, set with the button on the battery |
| Battery | Not included – Therm-ic S-Pack 2400, 3000B or 4000B |
| Heating time per level 1/2/3 (Therm-ic) | S-Pack 2400: 11 / 5 / 3 h · S-Pack 3000B: 14 / 6 / 4 h · S-Pack 4000B: 20 / 8 / 6 h |
| Material | 69% polyamide, 29% merino wool, 2% elastane |
| Sizes (EU shoe size) | 35–36, 37–38, 39–41, 42–44, 45–47 |
| Made for | Cross-country skiing |
| Washing | Without batteries, inside out, 30 °C max in a laundry bag, dry flat |
| Warranty (Therm-ic) | 2 years |
Delivery and returns
You choose your delivery option at checkout:
- Standard delivery (tracked), 3–5 working days – £3.99
- Express delivery, 1–2 working days – £6.99
You have a 14-day right to cancel from the day you receive your item. Contact us within 14 days if you want to cancel your order.
Read more about returns and cancellationsWarranty and complaints
Your goods are covered by the Consumer Rights Act 2015: they must be of satisfactory quality, fit for purpose and as described. If something is wrong with your item, contact our customer service and we will help you.
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