What Make of Polo Shirt does Alex O'loughlin wear on Hawaii five-o?

In "Hawaii Five-0," Alex O'Loughlin, who plays Detective Steve McGarrett, is often seen wearing polo shirts from brands like Ralph Lauren and Tommy Hilfiger. These brands are known for their classic styles and fit, which complement the character's casual yet professional look. The shirts typically feature solid colors or subtle patterns, aligning with the show's aesthetic.