■ Brand: adidas ■ Features: climaheat (highest-level heat generation and insulation) / compression ■ Size: International size: M = Japanese size: O / XL equivalent This is a compression innerwear from adidas with the highest heat generation and insulation performance, featuring climaheat technology. (Similar to Under Armour's cold gear) I think it's perfect for exercise in cold weather. I am selling it because it no longer fits. Thank you.