Advanced Microwire Technology The patented Gerbing Microwire system is the most durable and efficient heating platform ever developed. Products incorporating Microwire technology utilizes patented micro-sized stainless steel fibers intertwined and encased in a proprietary waterproof coating. On-Board Temperature Control Powered by our 7V Rechargeable Lithium-ion Battery Pack, you can layer up for the cold no matter the conditions. Exceptional warmth is delivered via three strategic heating zones and a lofted anti-pill composition. Stay warm while others are feeling the cold bite! Extend Your Season Our Gerbing 7V outerwear is the perfect combination of warmth, comfort and style. The soft feel and modern fit of these great heated garments make them an absolute must-have this winter season. We promise you're going to love Gerbing Heated Clothing. World-Class Performance For over 40 years, Gerbing remains as the industry leader in heated clothing technologies to overcome cold weather conditions.