Here's some additional information:
* Specific brands: It's hard to definitively say what brands he wears, as he doesn't endorse any particular one. However, he has been spotted wearing glasses from brands like Oliver Peoples, Lindberg, and Cartier.
* Variations: While he favors round frames, he has also worn oval and rectangular glasses, sometimes with a slightly thicker frame.
* Personal preference: He clearly has a taste for classic, understated eyewear that complements his personality and style.
You can find similar styles of glasses in many optical stores or online retailers. If you're looking for a "Robert Redford" look, you can search for "round wire-frame glasses" or "classic gold frame glasses."