PATAGONIA. 52211CDBE. WOMENS LONG SLEEVED SUN STRETCH SHIRT. COTTON SEED BERLIN BLUE. Our most technical long-sleeved button-up is designed for hot and humid conditions. Made from a stretchy quick-drying ultralight recycled nylon polyester blend the Sun Stretch features two western drop-in chest pockets that can accommodate a passport or fly box. Sleeve tabs keep shirt sleeves rolled up.