Mathis Core Tee The Mathis Core short sleeve is designed to deliver the performance required out on the trails while maintaining the styling expected of your favorite graphic t-shirt. It's constructed from a lightweight DriRelease® jersey knit. DriRelease® promises to help regulate skin temperature with it’s moisture wicking yarn construction. The fabric is also fast drying, typically 4x faster than a typical cotton tee. The style is designed with a slim premium fit and features our interior neckline climbing cord hanger loop and Run Amok branding including an interior heat transfer to eliminate any discomfort. Because of the high quality of our DriRelease® jersey knit, the shirt is supremely comfortable with it’s soft & natural feel and is easy to care for while maintaining its shape.