XL Material Composition: 100% Polyester About this product Main material: Polyester Material Composition: 100% Polyester Electric heated vest, made in Japan heater, heated vest, USB/DC power supply, 3-level temperature control, quick heating, washable, inner wear for men and women A button-down style with no collar, an essential item for spring, autumn, and winter fashion, an inner down vest! Lightweight and warm, very convenient when going out. There is one button on the inside of the collar, allowing you to freely change the neckline from V-neck to round neck. Made with comfortable nylon fabric and 90% white duck down. It can be worn inside for warmth, or it can be worn directly as a jacket. It has excellent warmth while also being thin enough to be easily folded. The outer material uses soft synthetic fibers and is finished with sturdy stitching, making it extremely durable. Lightweight, fluffy and soft texture, warms the body, inexpensive, and convenient to carry. Soft to the touch, convenient to use in spring, autumn, and winter!