Battery Not Included: - Compatible with 5V/2A powerbanks - 10000mAh powerbank provides up to 6.5 hours of use

High-Quality Materials: - Outer made of durable polyester - Inside lined with graphene for efficient heat distribution - Filled with 90% 650 fill premium white duck down for superior insulation and comfort

Intelligent Heating System: - Equipped with 6 evenly distributed heating elements - Targeted warmth for neck, back, and abdomen - Keeps you cozy during outdoor activities

Adjustable Temperature Settings: - 3 temperature levels for customizable warmth - Maximum temperature of 65℃ for cold weather comfort

Battery-Operated and Portable: - Not included in the vest, compatible with most powerbanks - A single 5V/10000mAh charge powers up to 6.5 hours - Ideal for winter sports like hiking, camping, and skiing