Polyester Machine Wash [Health Care & Safe Heated Vest]9 high-quality carbon fiber heating elements generate heat for 4 core parts of the body, including the neck, back, abdomen, waist, etc. to help keep the body warm and promote blood circulation. [High-quality thermal fabric]Close-fitting design, detachable hood, provide extra wind protection. The hem of the clothes is designed with a stretch belt to help keep the body heat. For men with a wider waist and hips, it is recommended to choose one size larger. [Safe and Intelligent Heating] One-key adjustment of 3 levels of heating (high/medium/low), convenient and intelligent. [ For All Occasions]Heating vest can be used in a cold environment. For example, daily commuting, skiing, hiking, hunting, ice fishing, skiing, mountain climbing, etc. It is an ideal gift for family, friends and employees. [ Easy Care]Machine washable; Durable fabric and carbon fiber heating elements are completely safe for hand and machine washing.Just make sure your clothes are dry when charging.