Size: Please refer to the size details in the image before ordering!!!!! [Professional Service]: If you have any questions, please feel free to contact us help you can refund or replace it. We will definitely reply to you within 24 hours and give you a satisfactory answer. Polyester Machine Wash Fastening: Zipper Casual [Lightweight & Comfortable & Warm ]: Carbon fiber heating pads are built-in at the front and rear, allowing you to feel the warmth in 360.Quick heating, long-lasting warmth,and helping to promote blood circulation and relieve muscle pain. [High-quality material ]: High-quality material with anti-static and excellent insulation function, so you stay warm.The heating vest is made of lightweight insulation Waterproof Windproof materials (Power Bank Not Included) , comfortable and skin-friendly, and smooth to the touch. It can help you easily stay warm throughout the winter without the need for bulky winter clothing. [3 Temperature Levels Electrically Heated Jacket]: Easy to operate, the temperature is adjusted by the button on the left chest of the heated garment (red high, white medium, blue low), so you can adjust different heating levels depending on the weather and environment. [Convenient Heating]: Electric heated vest is compatible with any power bank with 5V 2A/2.1A USB output port. When it is connected to a 5V / 2A mobile power source (not included), hold down the power button for 3 seconds, and the graphite carbon fiber heating elements will generate heat across core body areas. [Suitable for all occasions]:The rechargeable heated vest keeps you warm and is perfect for a variety of outdoor activities, such as motorcycle riding, hiking, skiing, fishing, hunting. Perfect gift for parents, family and friends who have trouble fighting off cold weather in the winter for a thoughtful Christmas or birthday. [Hand wash/Machine wash]: It can be washed by hand or machine. Take out the power bank, put the USB interface cable into the pocket, add neutral detergent to hand wash, do not rub or beat violently, and dry the washed clothes naturally before use. [Perfect Holiday Gift]: The heating vest can help promote blood circulation and relieve muscle pain to a certain extent. Deliver warmth and health to the people you care about. The perfect gift for the upcoming Thanksgiving and Christmas. [Matters Needing Attention]: Matters needing attention: 1: If not used for a long time, please remove the portable source ; 2: Do not use hot water or strong acid detergent; 3: Do not use electricity for wet clothes. Please turn off the power supply and stop using it if you are wet in the rain; 4: The service time depends on the capacity of the portable source