Women's Heated Thermal Underwear

Our women's heated thermal underwear is warmed up by a USB-rechargeable power bank. Anniou's base layer clothing uses built-in carbon fibre or graphene heating elements to generate warmth directly against the skin. Whether you're heading out for a morning run, hitting the ski slopes, or simply trying to stay warm on a cold commute. This collection brings together women's heated thermal sets, heated long johns, and heated pyjamas.

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Women's Heated Thermal Underwear

Women's Heated Thermal Underwear

£89.00
£89.00
Women's 28 Area Heated Thermals

Women's 28 Area Heated Thermals

£99.00
£99.00

What Is Women's Heated Thermal Underwear?

Women's heated thermal underwear is a wearable heating system built into a close-fitting base layer. Unlike standard thermals that rely solely on insulation, heated thermals use integrated heating zones — typically ranging from 13 to 52 zones depending on the garment — powered by a USB power bank or rechargeable battery pack.

Most sets include a heated thermal top and heated thermal bottoms (long johns), offering full-body coverage. Heat settings are usually adjustable across three levels (low, medium, high), allowing you to tailor warmth to your environment.

Why Choose Heated Thermal Underwear for Women?

Women's heated thermal underwear is better suited for those who need active, controllable heat in cold conditions — such as skiers, hunters, motorcyclists, and outdoor workers — while standard thermal underwear works best for light, everyday insulation in milder temperatures.

Key benefits include:

  • Adjustable heat zones — target warmth precisely where you need it most
  • USB or battery-powered — compatible with standard power banks for easy recharging on the go
  • Lightweight and slim-fitting — designed to layer comfortably beneath outer garments
  • Multi-activity use — suitable for skiing, hiking, motorcycling, dog walking, hunting, and more
  • Washable construction — many options are machine washable for easy maintenance

Types of Women's Heated Thermals Available

Women's Heated Thermal Sets (Top & Bottom)

Full sets pair a heated long-sleeve top with heated thermal trousers. These are ideal for all-over warmth during extended outdoor sessions. Look for sets with 16 or more heating zones for thorough coverage.

Women's Heated Long Johns

Heated long johns focus warmth on the legs — particularly useful for skiing, cycling, or any activity where lower-body cold is the primary concern. Many feature heating zones across the thighs, knees, and calves.

Women's Heated Pyjamas

Designed for comfort at home or in cold sleeping environments, heated pyjamas offer a softer, more relaxed fit while still delivering gentle, adjustable warmth throughout the night or during rest.

What to Look for When Buying Women's Heated Thermal Underwear

Before purchasing, consider the following features:

  • Number of heating zones — more zones means more even heat distribution (look for 16–52 zones).
  • Heat settings — three adjustable levels offer the best balance of comfort and battery life.
  • Power source — USB-rechargeable options are more versatile; battery-included sets offer immediate use.
  • Material — fleece-lined options are warmer; lightweight options are better for active use.
  • Sizing — most brands offer S through 4XL; always check the brand's specific size guide.
  • Washability — confirm the garment is safe to wash before purchasing.

FAQ

Battery life varies by product and heat setting. On a low heat setting, most heated thermals last between 6 and 10 hours. On high heat, this typically drops to 2–4 hours. Some premium sets come with high-capacity batteries of 10,000mAh or more for extended use.

Yes. Women's heated thermal underwear is specifically designed as a base layer, meaning it fits close to the body and sits discreetly beneath everyday clothing, workwear, or outdoor gear without adding bulk.

Yes. Heated long johns are a popular choice among skiers because they provide targeted warmth to the legs without restricting movement. Look for options with at least 12 leg heating zones and a slim fit to ensure compatibility with ski trousers.

Remove the battery pack before washing. Most heated garments are machine washable on a gentle, cold cycle. Always refer to the care label, as some heating elements require hand washing or spot cleaning only.

Many rechargeable heated garments are compatible with standard USB or USB-C power banks, effectively extending wearable warmth indefinitely. Always confirm voltage compatibility before connecting a third-party power bank to your garment.