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Shipping Information
Savior Heat ships to the U.S. and over 100 countries worldwide. U.S. orders usually arrive within 2–7 days. For other logistics timeliness, please see "Shipping Policy"
Customer Support
Savior Heat offers support by phone and email. Call +1 888-892-9717 or email support@saviorheat.com. Service hours: Monday–Friday, 9:00 AM–6:00 PM EST. Lunch break: 12:00–1:00 PM EST.
FAQ’s
Have questions about your order or Savior Heat products? Find answers about shipping, returns, warranty, sizing, batteries, and product use here.
Visit our FAQs page to find answers to common questions.
Warmth Beyond the Ordinary
Cold days call for warmth that feels comfortable against the skin, not heavy or overwhelming. This heated base layer combines ClimaFlex® SkinGuard with a soft premium fabric blend for a gentler, more balanced warming experience.
Lenzing Modal and cupro bring a smooth, soft touch, while wool adds natural warmth and coziness. Three heating zones across the abdomen, upper back, and lower back help keep warmth close to the body’s core.
Designed to layer easily under jackets, ski shells, and everyday winter outfits, it helps you stay comfortably warm through commutes, outdoor activities, and longer days in the cold.
Gentle, controlled warmth made for skin-close wear.
Powered by EH® Heating System, three heating zones warm the abdomen, upper back, and lower back in about 10 seconds. The system starts on High, then automatically shifts to Medium after 5 minutes for a more balanced warming experience.
Three heat levels let you adjust warmth for everyday layering, outdoor activity, and longer winter days.
Long-Lasting Power
The 3000mAh rechargeable battery delivers up to 12–13H of warmth on Low, with a built-in USB-C port for easy, flexible charging.
With the included charger, a full charge takes about 2.5–3H. A compatible USB-C phone charger can also be used when needed, though charging time may vary.
The hidden side pocket keeps the battery comfortably out of the way, and the removable battery can travel in carry-on luggage.*
3000mAh · Up to 12–13H · USB-C · 2.5–3H Charging · Air Travel Ready
FCC · CE · UKCA · RoHS · GCC
Tech Specs
Fabric
Soft & Comfortable
Acrylic
Lenzing Modal
Wool
Heating System
3-Zone Core Heating Coverage
Heating zones across the abdomen, upper back, and lower back
Balanced warmth across key core areas
Designed for comfortable cold-weather wear
ClimaFlex® SkinGuard Safety Heating Technology
Balanced heat delivered closer to the skin
Designed for more even, comfortable warmth
Helps support a skin-close heating experience without feeling harsh
Fast Heating Elements
Heats up in about 10 seconds
Quick warmth across the abdomen, upper back, and lower back
Steady heat for everyday cold-weather comfort
Long-Lasting Heat
Low setting provides up to 12–13 hours of warmth
Core heating designed to last throughout the day
Runtime may vary depending on heat level, outside temperature, and usage conditions
Design
Slim Base Layer Design
Lightweight, breathable, skin-friendly fabric
Soft and flexible fit for comfortable movement
Designed to layer easily under jackets, ski suits, or other winter gear
Secure Concealed Battery Pocket
Hidden battery pocket positioned at the outer left waist
Keeps the battery secure and discreet during movement
Designed for comfortable all-day wear
Easy Heat Control
Quick and convenient temperature adjustment
Easy to operate while wearing layers or winter gear
Soft Skin-Contact Fabric
Lenzing Modal, wool, and cupro blend
Soft, breathable, and comfortable against the skin
Designed for all-day wear
Included in the Box
Heated Base Layers
3000mAh Battery
Boost Charging Cable
User Manual
Protective Laundry Bag
Premium Gift Box
FAQs
How to choose the right size?
Try checking your regular base layer size and referring to our size chart before purchase. This heated thermal underwear set includes a heated top and heated pants, with sizes from S to 3XL for different body types. If you’re between sizes or prefer a more relaxed fit, we recommend choosing the larger size.
Is this heated underwear good for outdoor activities?
Yes. This heated underwear set is designed for cold-weather activities like skiing, motorcycling, hunting, hiking, camping, fishing, snow shoveling, outdoor work, and daily winter wear. It can be worn as a heated base layer in freezing weather or as regular thermal underwear in milder conditions.
How long does the battery last?
The 7.4V 3000mAh rechargeable battery provides up to 13 hours of warmth on the low setting. Actual runtime may vary depending on the heat level, outside temperature, battery condition, and usage environment. The LED power indicator helps you check the remaining battery level.
How to use the heated underwear correctly?
Step 1: Charge the Battery — Fully charge the battery before first use.
Step 2: Connect the Battery — Plug the battery into the cable inside the battery pocket.
Step 3: Turn On the Heat — Press and hold the power button to turn on the heating system.
Step 4: Adjust the Heat — Short press the button to switch between heat levels.
Step 5: Turn Off the Heat — Press and hold the power button until the indicator light turns off.
Note: If the heated underwear will not be used for a long time, please remove the battery.
How should I care for heated underwear?
Remove the battery before cleaning. Hand washing is recommended, but machine washing may be available if allowed by the user manual. Use a laundry bag, wash gently with cold water, and air dry completely before use. Do not tumble dry, bleach, iron, or dry clean.
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