This is Adidas compression wear. I bought it in Taiwan, so the size is S, but it's close to a Japanese M. I'm selling it because I no longer have the opportunity to wear it. I've worn it about 5 times. Please understand that this is used clothing. The following is an AI description: 【High-Performance Material】 This shirt, featuring climacool technology, is highly breathable and provides a comfortable fit. It quickly evaporates sweat during exercise, allowing you to maintain an appropriate body temperature. 【Fit】 The techfit design provides a snug fit to the body, enhancing ease of movement. It's the perfect piece for training and sports. 【Stylish Design】 The simple gray color and Adidas logo design are suitable not only for sports but also for casual everyday wear. - Brand: adidas - Model: techfit - Material: climacool - Size: S - Color: Gray - Design: Long sleeve Thank you for looking.