【UPGRADED MATERIAL】: 100% Polyester, not only warm but also comfortable to touch. for warmth and comfort on cold winter days. 【CARBON FIBER HEATIING ELEMENTS】: Heat quickly in 5 seconds, 3 carbon fiber heating elements generate heat across core body areas (front and mid-back) boost your core body heat and keep you warm. In the HOT level,Up to 8 working hours for power bank 10000mAH and for 16 hours for 20000mAh 【THREE HEATING LEVEL】: 3 Heating leves (high, medium, and low settings). Change the heat setting of your jacket with a simple press of a button . ensures you don't lose any excess heat and enjoy comfortable warmth. 【PERFECT FOR OUTDOOR LIFE AND ADVENTURES】 - Ideal gift for families, friends, suits all kinds of situations especially for snowmobile, motorcycle, Mountaineering, Climbing, Hiking or Outdoor working, skiing, Fishing, Hunting against cold chilly winter. 【WASH&DRY SAFE】: Easy care , Machine Washable, the jacket have body protection function, when the temperature is too high, it will stop working immediately. Please take out the power bank and put the USB plug in the pocket before washing. ONE YEAR WARRANTY covered 【360º VISIBILITY】: The reflective tabard which could be seen from max 800 feet away and have a 360ºcoverage in all weather at day or night. Bright color and excellent reflective strips make you easy to be found, much safer at night!