Soft and breathable, not easy deformation, adjustable three temperature levels. Quick heating, energy saving, long service time. Activates various functions of skin and promotes metabolism. Help to warm the human body, consumes excess heat, increases blood oxygen and fluidity. Provides deeper adjustment of physiological functions to avoid sub-health state and restore the vitality. Improves body's microcirculation, activate the meridians, eliminate partial pain and inflammation. waist has removeable massager 6pcs heated area: belly*2pcs back:3pcs waist:1pcs(removeable massage) Heated size: about 5cm*10cm Specification: Color: black, gray,red Material: polyester, carbon fiber Temperature level: Low: about 45 Mid: about 55 High: about 65 Gender: unisex Size: M, L, XL, XXL, XXXL,XXXXL Package included: 1*heated vest (Without power bank) 1*USB cable Note: 1. Due to the light and screen difference, the item's color may be slightly different from the pictures. 2. Please allow slight deviation for the measurement data and make sure you do not mind before ordering. 3. The vest need to connect with power bank to heating, power bank is not included. 4.Do not use for a long time, please do not connect to mobile power. 5.Do not use hot water or strong acid detergent. 6.Do not use electricity for wet clothes. Please turn off the power and stop using the rain. 7.The usage time depends on the size of the charging capacity. 8.Do not connect directly to the power charger, please use the mobile charging connection as a power suppl Instructions for use: 1. Vest features built-in USB port to connect the power bank. 2. Power switch - long press the switch for 3 to 5 seconds. 3. Red light flashes - automatic heating 4. Red light - manual heating, high temperature 5. White light - medium temperature 6. Blue light - low temperature Washing instructions: 1.Remove the mobile power supply, add neutral detergent and wash it by hand. Do not force it or beat it. Allow the washed clothes to be naturally ventilated and dried before use. 2.The highest washing water temperature is 30 degrees Celsius 3.Do not bleach, do not turn over and dry, do not iron, do not dry clean, do not chlorine bleach, hand wash, machine wash (cover USB waterproof cover can be washed), gently rub, rinse 4.Hang dry and do not wring out by hand. Size Waist Length Bust Shoulder S 88cm 58.5cm 98cm 40.5cm M 92 cm 60.5cm 102cm 42cm L 96cm 62.5cm 106cm 43.5cm XL 100cm 64.5cm 110cm 45cm XXL 104cm 66.5cm 114cm 46.5cm XXXL 108cm 68.5cm 118cm 48cm XXXXL 112cm 68.5cm 122cm 49.5cm