When the route gets steep and your pack gets heavy, the Arc'teryx Kragg Selection Bird Short Sleeve Shirt delivers the comfort and durability serious climbers demand. Built from premium 160gsm SUPIMA cotton, this technical climbing shirt combines luxurious softness with rock-solid toughness that stands up to everything from granite scrapes to trail dust. The continuous-seam construction eliminates irritating pressure points while dynamically placed shoulder seams work seamlessly with your pack straps, whether you're approaching a multi-pitch wall or grinding through a long boulder session. Articulated patterning ensures unrestricted movement for high reaches and dynamic moves, while the breathable cotton construction keeps you cool when the sun beats down on exposed rock faces. This isn't just another cotton tee – it's a purpose-built piece of climbing apparel that moves with you from the first hold to the summit celebration.