Varmth Heated Base Layer Tank in black, worn over a cream long-sleeve top while putting on a camel coat in a bright hallway

Heated Base Layer Tank

Black / XS
$59
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Varmth Heated Base Layer Tank in Black, worn by a man over a stone-gray long-sleeve top with black wool trousers, in the studio on a warm stone background
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  • Varmth Heated Base Layer Tank in Black, worn by a man over a stone-gray long-sleeve top with black wool trousers, in the studio on a warm stone background
  • Illustrated heated zones on the Varmth Heated Base Layer Tank, front and back: two across the belly and one across the lower back
  • Woman wearing the Varmth Heated Base Layer Tank in black over a cream long-sleeve top, in the studio on a warm stone background
  • Varmth Heated Base Layer Tank in black, worn over a cream long-sleeve top while putting on a camel coat in a bright hallway
  • Woman wearing the Varmth Heated Base Layer Tank in black over a cream long-sleeve top, seen from behind in the studio on a warm stone background
  • Close-up of the Varmth Heated Base Layer Tank in black: the U-neck pulled forward to show its orange velvet lining, and the square power button low on the side
  • Varmth Heated Base Layer Tank in black, front and back: a wide U-neck, broad straps, an orange velvet lining and the button low on the side
  • Varmth Heated Base Layer Tank in Black, worn by a man over a stone-gray long-sleeve top with black wool trousers, in the studio on a warm stone background
  • Illustrated heated zones on the Varmth Heated Base Layer Tank, front and back: two across the belly and one across the lower back
  • Woman wearing the Varmth Heated Base Layer Tank in black over a cream long-sleeve top, in the studio on a warm stone background
  • Varmth Heated Base Layer Tank in black, worn over a cream long-sleeve top while putting on a camel coat in a bright hallway
  • Woman wearing the Varmth Heated Base Layer Tank in black over a cream long-sleeve top, seen from behind in the studio on a warm stone background
  • Close-up of the Varmth Heated Base Layer Tank in black: the U-neck pulled forward to show its orange velvet lining, and the square power button low on the side
  • Varmth Heated Base Layer Tank in black, front and back: a wide U-neck, broad straps, an orange velvet lining and the button low on the side
Varmth Heated Base Layer Tank

Heated Base Layer Tank

$59

Base layer top · 3 heated zones, belly and lower back, unisex

Size

Unisex US sizes by chest or bust, a close fit under your clothes.

Find my size

Find your size.

Varmth Heated Base Layer Tank

Unisex US sizes by chest or bust, a close fit under your clothes. Between sizes? Take the bigger one.

Units
Varmth Heated Base Layer Tank size chart
US sizeFits chest (in)(cm)
XS32–3481–86
S35–3789–94
M38–4097–102
L41–43104–109
XL44–46112–117
2XL47–50119–127

Body measurements. Between two sizes? Take the bigger one.

Pick your size

Size guide

Runs on a standard 5V USB power bank, sold separately.

Need a power bank? Add it from its own page: Cell 10K Power Bank

Delivery
$8 US shipping, free from $70. Arrives in 5⁠–⁠10 business days, tracked.The Cell ships separately from our US warehouse.
Returns
7 days from delivery. Wrong size sent? Replaced free.

Goes well with

  • Women's Heated Vest $79

    Women's Heated Vest

    $79

    ColorBlack
    Size
    Full details
  • Heated Layering Vest From $69

    Heated Layering Vest

    From $69

    Style
    ColorBlack
    Size
    Full details
Details

Heat right where the cold gets in first: your belly and the small of your back.

This close-fitting heated tank slips on under a shirt, a sweater or your work layers and keeps your core warm without adding sleeves or bulk. One button, three heat levels, and you're out the door. The simplest heated layer we make, and the easiest to wear every single day.

  • 3 heated zones: two across the belly at the front and one across the lower back.
  • One button, three heat levels. The button sits low on the side, near the hem.
  • Runs on a standard 5V USB power bank, sold separately. Plug the tank's USB lead into the bank and slip it into a pocket. No bank yet? Add our Cell 10K.
  • Slim, stretchy black tank with a soft orange velvet lining: a wide U-neck, broad shoulder straps and a hip-length hem. Thin enough to hide under a shirt or sweater.
  • Black, unisex US sizes XS to 2XL. Pick by your chest (or bust) on the size chart; it's meant to fit close. Between sizes? Take the bigger one. Wrong size sent? We send the right size free.
  • Want sleeves and more heat? The Heated Base Layer — Men's top has 22 zones.
  • Imported.
Heat and power
Heated zones
3
Power
Runs on a standard 5V USB power bank, sold separately.
In the box
The tank. Power bank sold separately.

The second photo shows the illustrated heated zones, front and back. See it
Size and fit
Units
Varmth Heated Base Layer Tank size chart
US sizeFits chest (in)(cm)
XS32–3481–86
S35–3789–94
M38–4097–102
L41–43104–109
XL44–46112–117
2XL47–50119–127

Size guide

Shipping and returns

US only. Tracked by email. Orders ship in 1–3 business days. Items from different warehouses can arrive in separate parcels, each with its own tracking.

Start within 7 days of delivery: unworn and unwashed, with everything it came with. Return postage is yours, and we refund the item price once it arrives.

14-day limited warranty. Damaged, faulty, not what you ordered or the wrong size sent? Tell us within 14 days of delivery and we replace it or refund you, at no cost to you.

Shipping Returns Warranty
Care

Worn against the skin, so start on the lowest setting and stop if it feels too hot. Pack your power bank in your carry-on when you fly, never in a checked bag. Unplug and take the power bank out before washing, then follow the care label. Don't tumble-dry it or iron over the heated panels. Not for young children, or for anyone who can't feel heat well or can't take the tank off on their own. Don't sleep in it.

Power

Power, sold separately.

Use a power bank you already own, or add one of ours. Each runs one heated item at a time.

All power banks
Cell 10K Power Bank10,000 mAh · USB-A and USB-C$29 Cell Slim Power Bank1 cm thin · two USB-A ports$35 Cell 20K Power Bank20,000 mAh · two USB-A ports$49

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Rechargeable battery pack included.

Questions

Does it come with a power bank?

No. It runs on a USB power bank, sold separately. Use one you have, or add one of our Cell power banks.

Is shipping free?

Yes, on US orders of $70 or more. Under $70, standard tracked shipping is $8, shown at checkout before you pay.

Where do orders ship from?

Some items ship from our US warehouse, others from our international warehouse, so a mixed order can arrive in more than one parcel, each with its own tracking. The shipping page lists each product.

What's your return policy?

Start a return within 7 days of delivery. It needs to be unworn and unwashed, with everything it came with; return postage is yours, and we refund the item price once it arrives. Damaged, faulty or not what you ordered? Tell us within 14 days and we put it right at no cost to you. On sized items, if we sent the wrong size, we send the right size free. Power banks, pocket warmers and the rechargeable insoles come back only unused: contact us first and we'll send the packing steps.

What does the warranty cover?

Every heated product and power bank we sell has a 14-day limited warranty against defects, counted from delivery. If it's faulty, we replace it or refund you, at no cost to you.

Can I fly with it?

Yes. Heated clothing and accessories that run from a separate power bank can go in a carry-on or a checked bag (TSA); take the power bank out first and keep it in your carry-on. Power banks, and anything with a built-in battery (pocket warmers, the Remote Control and App Control insoles), go in your carry-on only.

Who shouldn't use heated clothing?

Young children, and anyone who can't feel heat well or can't take the garment off on their own. Don't sleep in heated clothing. Stop if anything feels too hot.

Can I wear it against my skin?

Yes. It's a base layer, made to be worn next to your skin under your clothes. Start on low and check how your skin feels until you know it, and stop if anything feels too hot. Don't sleep in it.