Vuarnet Legend 06 sunglasses - Matthias Schoenaerts - A Bigger Slash
These are the same model sunglasses as worn by Alain Delon in the original movie La Piscine (A Bigger Splash is a remake of La Piscine).
In the same film Matthias also briefly wears the Dior sunglasses worn by Tilda Swinton.
The Vuarnet 06 sunglasses are also worn by Daniel Craig as James Bond in No Time To Die (read more on the Bond Lifestyle website.
Reference: Vuarnet Legend VL0006, Brown frame, Brownlynx lenses, 032