A lightweight jacket is a thin, breathable outerwear piece designed for mild weather conditions. Made from materials like nylon, polyester, or cotton, these jackets offer protection from wind and light rain without being bulky. They typically feature a zipper or button closure, and some come with adjustable hoods or cuffs for added comfort. Lightweight jackets are perfect for layering over a t-shirt or sweater, making them ideal for transitional seasons like spring or fall. They’re stylish, practical, and easy to pack for travel.