- Warm toes in under a minute
- Up to 8 hours per charge
- 2 × 4000mAh batteries in the box
- Thin enough for normal boots
- Machine washable, battery out
- 30-day returns, worn outdoors is fine
Thick socks keep the cold out for a while. These keep the warm in all day.
Rechargeable heated socks with three settings and up to eight hours per charge — thin enough to wear under the boots you already own, and machine washable once the battery is out.
- Heat you can feel in under a minute
- Three settings, one cuff button
- Two 4000mAh batteries included
- No bulk, no bunching, no pressure points
- Machine washable — battery out first
- Soft, breathable cotton blend
Order before 2pm MT (9pm UK) and it leaves today. Tracked delivery in 3–7 working days, US and UK.
Will they fit inside my normal boots?
Yes — that’s the point of them. The heating element is flat and sits along the top of the foot and toes, not under the sole. If a thick wool sock fits your boot, these fit with room to spare.
Where does the battery sit?
In a small zipped pocket on the outside of the cuff, just below the calf. It sits under a trouser leg without showing.
Can I really put them in the washing machine?
Yes. Unzip the cuff pocket, take the battery out, and wash them on a normal cool cycle. Just don’t wash them with the battery still in.
What size are they?
One stretch size that fits most adult feet — roughly UK 5–11½ / US men's 6–12 / EU 38–45.
How long does a charge last?
About 4 hours on high, 6 on medium, up to 8 on low. Feet usually need less heat than hands, so most people sit on low.
Are they safe to wear all day?
The element is sealed inside the knit and the top setting reaches 131°F / 55°C. If you have reduced sensation in your feet, speak to your doctor before using any heated garment.
What if they don’t work for me?
Thirty days from delivery, worn outdoors included. Email support with the order number.
If any of this is your winter, keep reading
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Your toes go numb an hour in, whatever you put on your feet
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You wear two pairs of socks and now the boot is too tight to help
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You get home and spend twenty minutes thawing out in front of a radiator
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Standing still is the worst part — the stand, the touchline, the job site
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Toe warmer packets go under the toes, where you then stand on them
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You’ve tried expensive merino and it bought you maybe half an hour
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You call the day early because of your feet, not because you were finished
Every one of those fixes failed in the same place: they were all trying to save heat your feet had already stopped receiving.
You’ve tried these. Here’s why they couldn’t work.
Thicker wool socks
Better insulation buys you time — maybe an hour. It can’t add heat, and once the foot stops supplying warmth there’s nothing left to insulate.
Two pairs at once
The classic. It tightens the boot, squeezes the foot, and reduces the blood flow that was keeping your toes warm in the first place.
Toe warmer packets
One fixed temperature, stuck to one spot, for a few hours — and then you’re standing on a flat, cold, used packet.
Warming up afterwards
Boot dryers and radiators fix the evening. They do nothing at hour three of standing in a frozen field.
Your feet go first, and it isn’t the boot’s fault
As soon as your core starts losing heat, your body narrows the blood vessels in your hands and feet and sends that blood inward to protect your heart and lungs. It’s called peripheral vasoconstriction. Your feet lose that argument twice over: they’re the furthest point from your heart, and inside a boot they barely move, so there is almost no muscle activity generating warmth.
A sock is a container. By hour two, there’s nothing left in it to contain.
So the heat has to come from the sock, not from you
Put a heat source against the top of the foot and the toes and the arithmetic changes. The tissue stays warm enough for blood to keep arriving, the foot stays comfortable and stable, and standing still stops being the thing that ends your day.
That’s the whole design brief. Not a warmer sock. A sock with its own supply.
The ThermaCore heating system, knitted flat
A flat carbon-fibre element runs across the top of the foot and over the toes — the two places that go numb first — and nothing at all runs under the sole, so there is nothing to stand on.
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Heat over the toes, nothing underfoot
The element is where the cold starts and absent where your weight lands. No lump, no hot spot, no pressure after four hours on your feet.
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Thin enough for the boots you own
Cotton-blend knit, close to the thickness of a normal winter sock. You don’t need a bigger boot.
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Washed like any other sock
Battery out of the cuff pocket, straight into the machine on a cool cycle. That’s the whole maintenance routine.
Charge. Press. Go.
Charge the night before
Both batteries, any USB-C charger, about four hours from empty. The indicator turns green when they’re ready.
Clip into the cuff, press once
Battery into the zipped cuff pocket, one press for high. Press again for medium, again for low, hold to switch off.
Boots on, day starts
The cuff sits under a trouser leg and nobody can tell. Drop to low after the first ten minutes and the charge lasts the day.
Four layers, and a deliberate gap
The gap matters as much as the layers: there is no heating element under the sole, because a heating element under the sole is the reason most heated socks get returned.
Nothing here is decoration
Toe-first heat placement
Toes are the first thing to go numb and the last thing a thick sock helps. That is where the element ends.
No bulk, no bunching
Flat seams and a flat element. Nothing gathers at the instep, nothing presses on the arch after four hours standing.
Three settings, one button
On the cuff, easy to find through a trouser leg. Colour tells you which setting you’re on without looking twice.
Machine washable
Battery out, cool cycle, air dry. They’re socks — they should be washable, and most heated socks aren’t.
Two batteries included
One per foot, 4000mAh each, USB-C. Not an add-on at checkout, not sold separately at £25 / $30.
Breathable, not sweaty
Cotton blend rather than sealed synthetic. Heat without the boot-sauna effect that makes feet colder later.
Free shipping · 30-day returns · Two batteries included
Six things worth knowing, including the annoying ones
If a page only tells you what a product does well, it isn’t telling you enough to decide.
Low is enough, most days
Feet need less than hands. Most people sit on low after the first ten minutes.
You feel it on the toes, not the sole
That surprises people at first. It’s deliberate — an element under the foot becomes a pressure point by hour three.
The cuff battery is visible in shorts
Under trousers or a boot cuff, invisible. There is no version of a heated sock where the battery disappears entirely.
They’re thicker than a dress sock
Closer to a hiking sock. Fine in boots, trainers and most work shoes. Tight in a slim dress shoe.
Wash them with the battery out
Every time. It takes five seconds and it is the single most common way people kill a heated sock.
Two pairs is the real answer
One on, one in the wash. It’s why the two-pack is the option most people take.
From the box to the end of the season
Warmth arrives before your boots are laced
Battery in the cuff, one press, and you feel it across the top of the foot while you’re still sitting down.
You come in without the thaw-out
No twenty minutes at the radiator. You take the boots off and your feet are just… feet.
They become the default pair
Which is exactly when you notice the problem with owning one pair, and why the two-pack exists.
Standing still stops ending the day
The stand, the touchline, the site, the platform. The cold is still there; it just isn’t the thing deciding when you leave.
Feet differ. Some people never go above low, others want high for the first half hour. What doesn’t change is that the heat comes from the sock instead of from a foot that stopped supplying it two hours ago.
Standing still stops being the hard part
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The last two hours of the sit. The ones you used to give away because your toes had gone.
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A full shift on a cold slab. Site work, warehouse doors, loading bays.
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Coming in without the ritual. No twenty minutes at the radiator.
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Boots that still fit. No second pair of socks squeezing the circulation you were trying to protect.
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Watching the touchline to the final whistle. Which is a small thing, and the one people mention most.
The Warm Chapter vs. thick socks and toe warmers
Wear them in a boot, in the cold, for a full day
That’s the only honest test. Run a battery flat, put them through the wash, stand still in a frozen field. If your feet aren’t better off, send them back within 30 days of delivery.
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Worn and washed is fine
Using them is the test. It doesn’t void the return.
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One email, same-day reply
Order number to support, instructions back the same working day.
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Battery trouble? Replaced
A battery that won’t hold charge inside the window gets replaced, not argued about.
Full terms on the returns page. Wrong size? Exchanges are free inside the same 30 days.
Frequently asked questions
How warm do they get?
131°F / 55°C on high, 122°F / 50°C on medium, 104°F / 40°C on low. Feet need less heat than hands, so low is where most people end up.
How long does a charge last?
About 4 hours on high, 6 on medium, up to 8 on low, from the two 4000mAh batteries in the box — one per foot.
Will they fit in my boots?
Yes. The knit is close to a normal winter sock and the element is flat, with nothing under the sole.
What size are they?
One stretch size covering roughly UK 5–11½ / US men's 6–12 / EU 38–45.
Can I wash them?
Yes — take the battery out of the zipped cuff pocket first, then a normal cool machine cycle. Washing with the battery in is the one thing that will ruin them.
Will the battery show under my trousers?
It sits in a slim pocket on the outside of the cuff, below the calf. Under trousers or a boot cuff it doesn’t show.
Are they good for skiing, hunting or site work?
Those are exactly the cases they’re built for — long periods outside where you’re standing still or barely moving.
Shipping and returns?
Free tracked delivery to the US and UK. Returns accepted within 30 days of delivery, worn and washed included.
Ready to feel the difference?
Wear them for thirty days. If your feet don’t thank you, send them back.
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