Item Type: Heated Vest Material: WDD 3 Gears Temperature Control: Red 55 / 131, White 50 / 122, Blue 45 / 113 Package List 1 x Heated Vest Please allow 13cm / 0.41.2in error due to manual measurement. 1Soft Material: The texture is soft and the hand feels good, and the inner is comfortable and skin friendly with WDD to keep warm. 2One Key Start: The heating vest is designed with one key start, display different temperatures in different colors, easy to use. 3Pain Relief: The heated vest can promote healthy blood flowing, increase muscle oxygen and nutrient flowing, relieve pain, shorten recovery time. 43 Heating Level: Red 55 / 131, white 50 / 122, blue 45 / 113. V neck, generous and neat, easy to create fashionable and casual style. 5Wide Use: It is designed for most cold weather workers and other outdoor activities (such as biking, hiking and other winter sports).