feature:One after fiveOne interface is connected to five heating vest pads, which is practical and convenient, while providing warmth service for your back, waist and abdomen.Three temperature levelsThree temperature levels are available for you to choose to meet your different needs. And the indicator light on the power switch can display the level through its light color, red is high level, blue is medium level, and green is low level.USB interfaceThe heating vest pad uses a USB interface, which makes it easy to find a suitable power source and is compatible with most mobile power sources.The heating vest pad is a very practical tool, which brings warm service in the cold winter and is very suitable for riding.Specification:Type: Heated vest cushionQuantity: 1 setMaterial: carbon fiber + composite fiberColour: BlackInterface: USBInput voltage: 5v 2aAdjustable temperature: 45-65 degrees Celsiuspack:1* Heated vest pad