Arc’teryx Kragg SL Cotton Bird Word SS Tee. Built for movement and made to last, the Kragg Tee uses SUPIMA® cotton — a naturally soft, breathable fabric that’s surprisingly tough. Designed with climbers in mind, it resists wear from rock and gear while keeping you cool and comfortable. The regular fit is patterned for freedom of motion and finished with a clean, versatile look that works far beyond the wall.