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Therm-ic Ultra Warm Comfort S.E.T® heated merino socks
£55.99
- Material
- 50% merino wool, 48% polyamide, 2% elastane
In stock
14-day right to cancel
Return conditions & costs
Goes well together
Therm-ic Ultra Warm Comfort S.E.T® heated merino socks, £55.99
+ Therm-ic S-Pack 3000B Bluetooth batteries for heated socks, 2-pack, £99.99
Total £155.98
£55.99
Black/grey / 35–36
- Warmth you don't noticeThe thin heating line doesn't change how the sock fits in the boot.
- Merino against the skinThe wool insulates even when you sweat and breathes when you work hard.
- Long daysWith the S-Pack 4000B up to 20 hours on the lowest level, according to Therm-ic.
For the coldest days on the slopes
When the thermometer shows double-digit minus, an ordinary ski sock isn't enough. The heating line around the toes keeps your feet warm without making the sock thicker.
The battery snaps onto the cuff
The S-Pack sits above the boot edge and the press studs keep it in place. One press changes the level.
Support where it counts
Polyamide fibres around the foot and leg add support, and channels in the knit lead moisture away to keep the foot dry.
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.
Can the heat interfere with my avalanche beacon?
Therm-ic notes that, like any electronic device, the product can interfere with an avalanche beacon. Test your gear together before heading off-piste.
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 to cancel. See our Returns page for conditions, return costs and your rights if an item is faulty.
Description
Ultra Warm Comfort is Therm-ic's thin merino heated sock for skiing in really cold conditions. A thin heating line, S.E.T®, runs around the toes and warms discreetly without you feeling it in the boot.
Half of the knit is merino wool, which insulates and breathes, while polyamide fibres support the foot and leg. Moisture is led away from the arch through small channels in the knit, keeping the foot dry.
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 4000B, heat lasts up to 20 hours on the lowest level, according to Therm-ic.
Comfort is the softer of the Comfort/Performance pair: a good pick for long days on the slopes when warmth and softness come first.
Features
- Thin S.E.T® heating line around the toes, unnoticeable in the boot
- 50% merino wool that insulates and breathes
- 3 heat levels, up to 20 h on level 1 with S-Pack 4000B according to Therm-ic
- Wicks moisture away from the arch
- Unisex, sizes 35–47
- 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 | 50% merino wool, 48% polyamide, 2% elastane |
| Sizes (EU shoe size) | 35–36, 37–38, 39–41, 42–44, 45–47 |
| Made for | Skiing in severe cold |
| Washing | Without batteries, inside out, 30 °C max in a laundry bag, dry flat |
| Warranty (Therm-ic) | 2 years |
Delivery and returns
Delivery is available to mainland Great Britain. See the Delivery page for excluded areas and the available services.
- 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.
Contact customer service