Graphene Heat · 12V Low Voltage System
Wider, steadier warmth for freezing winter days. Built with six wrapped heating zones, a certified 18400 mAh battery, weather protection, and a clean classic fit.
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Men's M425
Rugged winter fit with 12V graphene heat, 18400 mAh battery support, detachable hood, and large hand warming pockets.
Women's W425
Clean everyday silhouette with six heating zones, windproof waterproof polyester, and three adjustable heat levels.
Women's W433
Stylish cold-weather coat designed for commuting, skiing, snowboarding, camping, and everyday winter wear.
Third-Generation Graphene
Doumern uses a whole-piece integrated graphene heating structure that expands the heating area to 2-8 times larger than traditional ordinary pads. Heat spreads through six scientifically wrapped zones for more stable comfort across the upper body.
Battery & Care
18400 mAh capacity, 70.84 Wh power, 20W fast charging, and CE, FCC, ROHS, and UN38.3 certifications.
3.5-4.5 hours on high, 5-6 hours on medium, and up to 8-10 hours on low mode.
Standard USB-C power banks cannot supply sufficient heating voltage. Use the original matching battery pack.
Remove the battery and cover the DC port before washing. Use a laundry bag and air dry naturally.
After Sales
Tell us what happened and include your Amazon order ID when available. Our support team can help with setup, charging, washing, replacement questions, and product troubleshooting.
About Doumern
Our brand was born from a simple pursuit: to bring warmth, comfort, and style to the coldest days. By integrating graphene technology into stylish designs, we ensure long-lasting warmth without compromising on aesthetics. Every detail, from waterproofing to intelligent temperature control and a large battery capacity, is meticulously crafted to help you face winter with confidence and style.
FAQ
No. The jacket uses a professional DC 12V low-voltage heating system. Use the original matching battery pack for best heating performance.
Yes. Remove the battery, cover the DC port rubber cap, place the jacket in a laundry bag, and air dry naturally. Do not tumble dry at high temperature.
The six zones cover the neck, back, dual arms, and two hand pockets.