Applicable age group: adult Applicable gender: unisex / both men and women Fabric name: diving material Fabric Composition: Polyester Fiber (Polyester) Lining name: diving material Lining composition: polyester fiber (polyester) Style: leisure Function: heating and keeping warm Neck type: V neck Size (Size) S Fits Height 145-160 Shoulder 34 Length 58 Bust 90 Waist 88 M Fits Height 155-170 Shoulder 36 Length 60 Bust 94 Waist 92 L Fits Height 160-175 Shoulder 38 Length 62 Bust 98 Waist 96 XL Fits Height 170-180 Shoulder 40 Length 64 Bust 102 Waist 100 XXL Fits Height 180-189 Shoulder 42 Length 66 Bust 106 Waist 104 XXXL Fits Height 180-189 Shoulder 44 Length 68 Bust 110 Waist 108 XXXXL Fits Height 180-189 Shoulder 46 Length 70 Bust 114 Waist 112 XXXXXL Fits Height 180-189 Shoulder 48 Length 72 Bust 118 Waist 116 Function: An electric heating vest, warm artifact, front and rear heating, keeping the temperature above 37 degrees. Keep warm and keep out the cold, promote blood circulation and resolve phlegm, absorb moisture and detoxify, tighten rheumatism, protect kidney and kidney. Five heating areas, scientifically distributed in the waist, abdomen, back and shoulders, the whole body is surrounded by warmth to protect key positions from cold High temperature 65 degrees, medium temperature 55 degrees, low temperature 45 degrees Ultra-low voltage, durable, standard universal USB interface charging, suitable for any signal power bank