Love your stylish jackets but wish they offered more warmth? Upgrade your cold-weather wardrobe with our battery-heated base layers, including heated shirts, pants, and underwear. Available in women’s, men’s, and unisex sizes, our heated underwear collection delivers cozy, reliable heat—even on the most frigid days. Say goodbye to bulky layering; Firoth heated underwear sets provide all the warmth you need with zero extra weight.
The heating covers back, abdomen, loins and knees, the areas that chill when you sit or stand still. The sets have separate batteries for the top and the bottom, so you set them independently.
Beyond providing cozy winter warmth, the Firoth Heated Underwear Set offers real therapeutic benefits, helping to boost blood circulation, ease muscle stiffness, and maintain ideal body heat. It is the ultimate cold-weather gift for anyone in your life—whether it's a mom who is perpetually chilly, an adventurous partner who loves hiking, or a grandparent struggling with joint pain. Designed for daily wear throughout the coldest months, this heated base layer inspires genuine, excited gratitude instead of just a polite "thank you."
Using the carbon fiber far infrared heating technology, the heating speed is fast, the heating speed is uniform, the heating is smooth, can be scrubbed clean, the wire is not easy to break, high temperature resistance, tensile resistance, safe and no radiation.
Firoth heated underwear heat quickly in seconds, up to 8 carbon fiber heating elements generate heat across core body areas (shoulder, back, waist, Hind hip, knee), using carbon fiber heating technology, temperature controllable, quickly reach 57°C/ 135°F.
Three-speed temperature control, green energy-saving gear (43°C/110°F), blue comfort gear (48°C/120°F), red warm gear (57°C/ 135°F), Press and hold the button for 3 seconds to turn on, lightly press Button one-button shift. When the temperature inside the clothes reaches 57°C, the heating will be automatically stopped.
Machine washable/hand wash. If it is machine wash, please put the clothes into the laundry bag to wash. To ensure the service life of the clothes, try to avoid strong washing and dry normally. Rinse it with clean water after washing. Do not wring it out. Hang dry it naturally.
The power button is waterproof. Heating elements and overall pants structure are designed to endure routine hand or machine wash.
Firoth heated underwear delivers continuous, steady warmth to prevent heat loss, keeping your core comfortable and helping improve physical performance during freezing conditions.
Firoth heated underwear is perfect for outdoor workers, motorcyclists, winter sports enthusiasts, and cold-weather hobbyists, providing reliable thermal comfort across any weather conditions.
Thanks to its streamlined, ergonomic cut, it slides effortlessly under any outfit—from heavy-duty workwear and riding gear to winter sports apparel and casual clothing—ensuring subtle yet effective cold protection.
Firoth heated base layers feature targeted heating zones that maintain a stable body temperature on the slopes. Made from stretchy, breathable fabrics, they provide reliable warmth without restricting movement under ski gear.
Yes. Seamless heated tops and leggings fit comfortably under standard motorcycle gear without adding bulk, delivering long-lasting, even warmth that protects against high-speed windchill on extended cold-weather trips.
By placing heating elements at strategic locations—such as the chest, back, stomach, and legs—targeted heating zones deliver optimal insulation and core warmth where your body needs it most, even in extreme conditions.
The adjustable heating system allows you to regulate warmth precisely, offering flexibility and comfort at all times.
With heating autonomy of up to 9 hours, these heated underwear options are perfect for long days skiing or riding, as well as for outdoor work.
Firoth strikes the perfect balance between high-performance heating technology and everyday comfort. Its long-lasting battery power and sleek, lightweight fit offer invisible protection that performs reliably across all winter activities.
Always remove the battery pack before cleaning. Hand washing with a mild detergent is recommended, though you can machine wash on a delicate 30°C cycle with a low spin speed. Avoid fabric softeners, bleach, and dry cleaning.
