The SUPERAIR (TM) T is so soft and light that you'll think it's silk. We used the finest, long-staple organic cotton yarn and knit it into a fabric that 's more breathable, dries faster, and is stronger than regular cotton. So when the temperatures get really hot, you can experience K UHLing next-to-skin comfort. MATCHED BY NO ONE (R) Kuhl Superair Tee Mens | Light Grey | X-Large | Christy Sports