Zipper closure Please read the following size table carefully before placing an order: L: Suitable for weight 47.5-57.5kg XL: suitable for weight 57.5-65kg 2XL: suitable for weight 65-72.5kg 3XL: suitable for weight 70-80kg 4XL: suitable for weight 80-90kg Hand Wash or Machine Wash in Gentle Cycle Fast Heating & Stylish in the Outdoors: Warm heated vest for you to enjoy outdoor activities like camping, hunting, fishing, skiing, hiking or watching football game in this cold and chilly winter. Great as an outer wear or a comfy base layer Skin-Friendly Material and Neat Design: this practical gilet is made of lightweight Spandex, crafted with ultra-breathable lining ensure soft and comfortable to wear. Features zippered side pockets to store power bank (power bank is NOT included) Warm Health Care: Built-in 7 pieces heat therapy pad quickly warm up, helps promote blood circulation and relieves muscles, shoulder and back discomfort