Randolph Engineering Aviator - Ryan Reynolds - 6 Underground
The sunglasses have a mate black frame, and the bayonet temples typical for the model.
This hand assembled, US brand is often spotted in films and tv series, see more Randolph Engineering sightings here. Even in the same film, we can also see the Randolph Engineering Concorde model on Manuel Garcia-Rulfo.
Reference: Randolph Engineering Aviator AF119 Matte Black frame, Polarized lenses, Bayonet Temples
Towards the end of the film, when he sits on a terrace sipping Lavazza coffee, Ryan Reynolds wears another, unidentified pair of brown sunglasses, but in the last shot, he wears the Randolph's again.
Complete the look
Ryan Reynolds is wearing Chopard watches throughout the film and several Belstaff jackets. He drinks Lavazza coffee and drives an Alfa Romeo Giulia.