This is a Montbell Chamois Vest. Color: Red Size: M (Women's) Length: Approximately 57cm Width: Approximately 43cm It has been used a few times and is in clean condition. The following is quoted from the web page: ■ Product Overview Uses Chamois for a comfortable feel. This vest uses Chamois, which is thin yet warm and has a comfortable feel. It is lightweight, compact, and easy to carry, providing warmth. ■ Chamois This is a fleece material made by densely knitting ultrafine microfibers, which are one-tenth the thickness of human hair. Although it is very lightweight and thin, it can store a lot of air between the fibers, providing high heat retention. ● Material: Chamois [Polyester] ● Average weight: 135g