Carbon fiber heating elements for heated vest, heated clothes, best battery heated products solutionBest soultion for the heated heat.Heating elements material: Carbon fiberVoltage: 7.4V( 3.7V can be choosed)Resistance: 8ohmFast heat, can be wash, longer using time.Use 7.4V, 4400mAh can be use 10 hours.OEM&ODM Heating elments for heated glove, heated shoes, heated insole, heated sock, heated clothes.heated glove heating elements7.4V, 10ohm,3.7V, 3ohmheated insole heating elements7.4V, 10ohmheated clothes heating elements7.4V, 8ohmheated hat heating elements3.7V, 5ohmheated shoes heating elements7.4V,10ohm