The Oakley SI Notch Hat features an official collaboration with Notch technology to optimize compatibility between headgear and eyewear. The visor is engineered with patented contour notches that eliminate traditional interference points, allowing sunglasses or shooting glasses to sit naturally against your face. Constructed entirely from premium 100% polyester fabric, it provides a highly breathable, quick-drying performance architecture designed for extreme field conditions. The front features a hook-and-loop morale patch panel decorated with subtle, subdued Oakley ellipse embroidery for personalized identification. Designed in a sleek "Black" colorway with an ergonomic stretch-fit band, this cap provides low-profile, anti-chafe comfort tailored specifically for tactical operators and outdoor enthusiasts. Oakley SI Notch Black Hat FOS901819-001, LG/XL