Zipper closure Hand wash or use the laundry bag (included) for machine wash [2021 Upgraded Version]: Our heated vest women has 3 heating levels, generating heat across your abdominal and your back, keep you warm in cold winter. And you can adjust to the temp according to your needs, it will give you a strong support in chill weather. [Multifunctional Vest]: You just need to long press of the button for 2-3 seconds then heated vest with battery pack will begin to heat up. This heated vest for women rechargeable is a nice choice for fishing ,camping, hiking, hunting and so on. And it is convenient in your life such as walking the dog, shoveling snow,cycling and running. USB-Powered for Lasting HeatUniquely powered by a portable charger with 2A USB output to keep warmth in and stand up against elements. Plugged into a 10000mAh battery pack (not included), this polished heated vest is capable of retaining warmth up to 7 hours at Low Level, 5 hours at Medium Level, and 3 hours at High Level. Lightweight DesignFeaturing quilted, lightweight design and fine interior lining for unrestricted comfort and coziness in fall and winter. With a zipper on the front, you can layer this heated vest over varieties of tops to add a touch of style for refined looks. Effortless MaintenanceTo maintain the quality and expand the service life of the heated vest, please hand wash the vest or put the vest into a mesh laundry bag for machine wash. Drip dry the heated vest in a cool, well-ventilated place before the next use. DO NOT bleach, iron, dry-clean the heated vest.