It looks like Jason Isaacs is carrying a pair of L.G.R Malabo Bold sunglasses in  The White Lotus Season 3 (2025).

The glasses can be spotted in episode 2 of Season 3 of The White Lotus. In that episode, Jason Isaacs never wears the sunglasses, but only has them hanging on his shirt.

In the second image of the sunglasses hanging on Jason Isaacs shirt, we can just see what looks like the little 'Giraffe' logo on the inside of the temple tips. And the rivets on the front also seem to match the L.G.R Malabo Bold rivets.

This is the second pair of sunglasses worn by Jason Isaacs in The White Lotus, after he sports Ermenegildo Zegna sunglasses in Episode 1 of Season 3.

Reference: L.G.R Malabo Bold C01 Sunglasses Black frame / Photochromic Yellow Gradient lens 52-19-145 (not confirmed)