Warm legs in 30 seconds
12 zones heat hips, thighs & knees fast so getting out the door’s easy.
Heated Base Layer Pants
- Warm in 30 seconds - 12 heat zones
- All-day warmth - up to 10 hours
- Your heat, your way - 3 adjustable levels
Free US Shipping
30-Day Guarantee
The Heated Base Layer Pants deliver rapid, targeted warmth with ThermoSphere™ heating technology, engineered to keep your lower body comfortable when temperatures drop.
12 ThermoSphere™ panels warm your hips, thighs, and calves in just 30 seconds, so you stay cosy whether you’re hiking, skiing, commuting, or spending long days outdoors.
What’s Included?
1x Heated Base Layer Pants with 12 integrated ThermoSphere™ panels
1x USB cable for connecting a power bank
NOTE: Power bank sold separately. Works with any standard 5V USB power bank, including our long-lasting 10,000mAh power bank (up to 10 hours of heat). Add one to your order if you don’t already have a compatible power bank.
Key Specs
12 Heat Zones: Waist, hips, thighs, and calves.
3 Heat Levels:
Low: 25°C / 77°F for 10hrs
Medium: 35°C / 95°F for 8hrs
High: 45°C / 113°F for 6hrs
Power: 5V USB
Runtime: Up to 10 hours (using our 10,000mAh power bank)
Fit: Regular
Materials: Polyester
Care Instructions
Remove power bank before washing
Machine wash cold, gentle cycle
Line dry; do not tumble dry
Compatibility
Works with any 5V USB power bank
Optimised to work with our 10,000mAh power bank
Shipping
- Free tracked shipping on every order
- Fast dispatch within 24 hours
You'll receive tracking details as soon as your order ships.
Delivery Times:
- USA: 6-10 days
- Canada: 6-10 days
- Australia: 6-10 days
- New Zealand: 6-10 days
- UK: 5-9 days
- Ireland: 9-13 days
- Rest of World: 6-10 days
NOTE: Power banks ship separately due to international battery regulations and typically arrive 7-10 business days from dispatch.
Read our full shipping policy.
Exchanges & Returns
30-Day Fit Guarantee: If your item doesn't fit as expected, we offer free size exchanges to make sure you get the perfect fit.
Flexible Resolution Options:
- Free size exchanges
- Store credit
- Refund to the original payment method
Item must be clean, unworn and undamaged.
Read our full refund policy.
We stand behind the quality and performance of every ToastyBody product. If there’s an issue, we’ll make it right.
What’s Covered
- Incorrect size or fit concerns
- Performance issues
- Manufacturing defects
How It Works
If your item doesn’t fit as expected or you experience a genuine product issue, email our support team within 30 days of delivery, and we’ll review your request promptly.
Where eligible, we offer:
- Free size exchanges (recommended for fit issues)
- Store credit
- Refund to the original payment method
Items must be clean, unworn, and undamaged.
Our team may request photos to assess performance or defect claims before approval.
Please note: Normal wear and tear, misuse, or damage after delivery is not covered.
Join 15,000+ cold weather warriors.
Heated Base Layer Pants
Sale price$119.99
Regular price$149.99
Free US
Shipping
30-Day
Returns
Money Back
Guarantee
What Makes toastybody Different?
Heat Up In 30 Seconds
12 ThermoSphere™ panels warm your hips, thighs & calves fast.
3 Adjustable Heat Levels
One tap to switch between low, medium & high warmth.
Up To 10 Hours Runtime
Pair with our 10,000 mAh power bank for all-day comfort.
Washable & Built For Movement
Flexible base layer design, machine-washable for daily wear.
How To Use Your Heated Clothing
Warm in minutes, comfortable all day. Here's how simple it is.
1
Connect Your Power Bank
Plug any standard 5V USB power bank into the internal pocket. We recommend our 10,000mAh power bank for up to 10 hours of heat.
2
Press To Heat
Hold the button for 3 seconds to turn on. You'll feel the warmth within 30 seconds.
3
Choose Your Level
Press the button again to cycle through 3 heat levels (low, medium, or high) to match the weather and your comfort.
Power bank sold separately. See the instruction manual for full setup details.
ThermoSphere™ Technology: Smarter Heat You Can Feel Instantly
ThermoSphere™ powers every ToastyBody pant. 12 ultra-thin, flexible carbon panels warm your hips, thighs and calves in seconds, built into the fabric so they move with you, not against you.
-
Power That Lasts
Works with any 5V USB power bank (sold separately). Pair with our power bank for up to 10 hours of lower‑body warmth.
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Heat You Control
Three simple settings; Low, Medium, High, so you can add a gentle boost for commutes or dial up the heat for long days outdoors.
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Full Freedom Of Movement
Stretch heat panels map to major muscle groups (hips, quads, hamstrings, calves) for even warmth without bulk.
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Safety Built-In
Smart regulation maintains a steady temperature with automatic protection to prevent overheating.
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Smarter Efficiency
Advanced carbon tech delivers more heat with less drain, extending runtime so you stay warmer, for longer.
Note: Third-party power banks vary in quality. Low-quality units may reduce runtime or performance. For best results and safety, use the official ToastyBody Power Bank (sold separately).
Safety & Protection
Heated clothing should feel reassuring, not risky. Here's how we keep you safe.
Safe Low Voltage (5V USB)
Powered by a standard 5V USB power bank, the same safe voltage as charging your phone. No mains electricity, no exposed wiring.
Automatic Temperature Regulation
Built-in sensors monitor heat output continuously. If the temperature exceeds the set level, the system adjusts automatically to prevent overheating.
FCC Certified
Tested and certified to meet U.S. Federal Communications Commission standards for electronic devices. Designed for reliable, everyday use.
Durable & Washable
Heating elements are fully sealed and insulated. Simply remove the power bank and machine wash on a gentle cycle, no damage to the electronics.
FCC Certified · Low Voltage · Built-In Overheat Protection
Why toastybody
Sets The Standard
Heated clothing that’s made to move, built to last, and trusted by 15,000+ customers.
Conquer Every Cold Moment
Under‑trouser heat, zero bulk.
Slim base layer fits under jeans or work trousers without bunching.
Warm you, not the whole house.
Targeted leg warmth from a single power bank saves on energy.
Stand longer, shiver less.
Even warmth over quads, hamstrings & calves keeps the chill at bay.
Built for long shifts outside.
Stretch fabric equals free movement and steady lower‑body warmth.
Beat wind‑chill on every mile.
Heat sits close to thighs & knees under riding pants for sustained comfort.
All-night camp comfort.
Steady warmth makes every moment outdoors easier.
First lift to après, covered.
Lower‑body warmth under salopettes keeps knees and calves cosy all day.
Warmth You Can Trust
Trusted by 15,000+ customers who rely on their base layer to deliver all-day heat.
Our Heated Base Layer Pants are backed by our quality guarantee so you can shop with total confidence.
- Free Shipping Fast & Tracked
- 30‑Day Returns Try It Risk-Free
- Quality Guarantee Built To Last
- Helpful Support Real People, Real Help
Size Guide For Top & Pants
Choose based on your largest measurement (chest or waist). Easy 30-day returns if it’s not quite right.
Gender: Men
Units: cm
One size applies to both items in the set—pick based on your largest measurement (chest or waist). Measurements are garment guidelines; allow ±1–2 cm / ±0.5–0.75" tolerance.
Heated Base Layer Top - Men
| Size | Chest (cm) | Sleeve (cm) | Length (cm) |
|---|---|---|---|
| XS | |||
| S | |||
| M | |||
| L | |||
| XL | |||
| 2XL | |||
| 3XL | |||
| XS | |||
| S | |||
| M | |||
| L | |||
| XL | |||
| 2XL | |||
| 3XL |
Heated Base Layer Pants - Men
| Size | Waist (cm) | Hip (cm) | Length (cm) |
|---|---|---|---|
| XS | |||
| S | |||
| M | |||
| L | |||
| XL | |||
| 2XL | |||
| 3XL | |||
| XS | |||
| S | |||
| M | |||
| L | |||
| XL | |||
| 2XL | |||
| 3XL |
Fit & Measuring Tips
Set fit: Use your largest measurement (chest or waist). Example: chest = L, waist = M → pick L.
Fit intent: Close to body for efficient heating, not tight.
Layering: If you’ll wear thicker mid-layers over the top, size up.
Chest (top): Measure under arms around the fullest part, tape level.
Waist (bottoms): Measure at your natural waist (above hips) with a relaxed posture. Hip: around the fullest part.
Need help with sizing? Email our team
Got Questions?
We’ve got answers.
Will they fit under my usual trousers/ski pants?
Yes. Slim, stretchy, no‑bulk base layer.
Will they fit under my usual trousers/ski pants?
Yes. Slim, stretchy, no‑bulk base layer.
The Heated Base Layer Pants are designed with a flexible, close‑cut fit that sits smoothly under jeans, work trousers, or ski/shell pants without bunching. If you prefer extra room or plan to wear thicker outer layers, size up.
Do the pants need a power bank?
Yes, one required (sold separately).
Do the pants need a power bank?
Yes, one required (sold separately).
They connect via their own USB lead and require a power bank to run. When you add the pants to your cart, you’ll see a friendly prompt to add a compatible power bank so you won’t miss it. While most 5V USB banks work, we recommend the ToastyBody 10,000 mAh Power Bank for safe, reliable performance and all‑day runtime.
Where does the power bank go? Will it dig in when I sit or move?
Tucked into a discreet waistband pocket.
Where does the power bank go? Will it dig in when I sit or move?
Tucked into a discreet waistband pocket.
A low‑profile pocket secures the power bank at the hip so it sits flat under outerwear. A short, routed cable keeps everything tidy and out of the way when you’re bending, walking, or sitting.
How warm do they get, and how fast?
Feel heat in ~30 seconds with 3 settings.
How warm do they get, and how fast?
Feel heat in ~30 seconds with 3 settings.
ThermoSphere™ panels warm quickly. Switch with a single button:
- Low (blue): ~25 °C / 77°F up to ~10 hrs
- Medium (white): ~35 °C / 95°F ~7–8 hrs
- High (red): ~45 °C / 113°F ~5–6 hrs
Are they good for running or high‑intensity activity?
Best for low‑to‑moderate effort or stop‑start days.
Are they good for running or high‑intensity activity?
Best for low‑to‑moderate effort or stop‑start days.
They shine for commuting, chairlift downtime, spectating, outdoor work, and cold walks. During hard efforts your legs generate plenty of heat, most people use Low or turn them off while moving, then bump the heat during breaks.
How many heating zones are there, and where?
12 heat zones at the waist, thighs, and calves.
How many heating zones are there, and where?
12 heat zones at the waist, thighs, and calves.
ThermoSphere™ panels focus on the upper thighs, waist/seat area, and calves for balanced warmth where legs typically feel the cold most. Heat is distributed to avoid hot spots and preserve freedom of movement.
What sizes are available, and how should I choose?
Available in XXS–2XL; true‑to‑size fit.
What sizes are available, and how should I choose?
Available in XXS–2XL; true‑to‑size fit.
We offer sizes XXS–2XL. Choose your usual base‑layer size for a close, heat‑efficient fit. If you’re between sizes or have broader thighs/hips, size up for comfort. Check our size chart for waist, hip, and length guidelines.
How do I wash and care for the pants?
Machine‑washable (remove the power bank first).
How do I wash and care for the pants?
Machine‑washable (remove the power bank first).
Unplug and remove the power bank, close fastenings, place in a laundry bag, and wash on a gentle cycle. Air‑dry only. Avoid bleach, ironing, or dry cleaning to protect the heating elements and wiring.
Still got a question? Email our team — we’re here to help.
★★★★★
Trusted by 15,000+ customers
Never Have Cold Legs Again
- 12 ThermoSphere™ Zones
- Heats Up In 30 Seconds
- Up To 10 Hours Runtime
Want head-to-toe heat? Get The Set
Free Shipping · 30-Day Returns