I was using these, one for myself and one for my husband. I'd like to offer them as a set of two to anyone who understands that they are used items. 【Comfortable to Wear】 This posture correction belt is made of a mix of polyester and nylon, making it lightweight and breathable, and comfortable for long periods of wear. 【Size Options】 Available in two sizes, M and L, allowing you to choose the right fit for your body type, making it suitable for a wide range of people. 【Posture Improvement Support】 Designed to support correct posture and improve slouching, using it during daily life and work can help you maintain a healthier posture. - Color: Black - Size: M - Size: L - Material: Polyester, Nylon - Material: Polyester, Nylon Thank you for looking.