Description: Product name: Electric Vest Material: cotton polyester fiber Features: intelligent three-speed temperature control adjustable Size: S/M/L/XL/XXL/XXXL Packing list:1 x heating vest (power bank not included) Features: Warm, Comfortable, Classic Style Design: It can ensure that you do not lose any excess heat, enjoy the comfort of warmth. It is gentle, waterproof, windproof, ensuring you are not restricted to outdoor sports without losing elegance. Safe and Reliable: 5V safe voltage, the heating piece uses carbon fiber heating wire, no radiation, stable heat, temperature control. USB Charging, Safe Washing: It is convenient to charge. You need to always connect 5V2A mobile power, (the product does not include mobile power). You need to remove the mobile power when washing, you can easily wash, hand wash, dry cleaning. Three-Speed Temperature Adjustment: It can control back fever. Three high temperature, medium temperature, low temperature mode adjustment, easy heating. Widely Applicable: Ideal gifts for family members, friends and staff, enjoy snowmobiling, motorbike, hiking, camping, hiking, skiing, fishing, hunting or office daily life and autumn and winter. Note: 1.Due to screen and other objective reasons, there may be a certain color difference, please understand. 2.Due to manual measurement, please allow 1-3 cm error, thank you.