Oliver Peoples Oliver - Kevin Costner - Yellowstone
The Oliver Peoples sunglasses seen in Season 5 of the series have the Cocobolo Tortoise frame through which you can see the metal frame in the arms.
The model is offered in two sizes: 51mm and 54mm. It looks like Kevin Costner wears the 51mm version.
Also available on Pret A Voir in several color variations.
Yellowstone is an American neo-Western drama television series created by Taylor Sheridan and John Linson. The series stars Kevin Costner, Luke Grimes, Kelly Reilly, Wes Bentley, Cole Hauser, Kelsey Asbille, and Gil Birmingham.
Reference: Oliver Peoples Oliver Sun OV5393SU Cocobolo 10035751-19 with True Polar Brown lens