Ray-Ban 2140 Wayfarer - Al Pacino - The Humbling
The glasses have a black frame and the lenses are not polarized, otherwise a small "p" would visible next to the Ray-Ban logo on the lens.
The Wayfarer is one of the most popular sunglasses frames, see more Wayfarer sightings in movies.
Reference: Ray-Ban RB 2140 Wayfarer - Color: Black (code 901)
Al Pacino wears several different sunglasses and eyeglasses in the film, including a pair of Ray-Ban 3025 Aviator sunglasses.