Robert Marc 740 and 614 - Paulo Costanzo - Royal Pains
The first pair, shown on top in a promotional photo, are Robert Marc 614 sunglasses, in Tortoise and limelight. The second pair, seen in the series, is Robert Marc's 740 model, in brown.
Reference: Robert Marc RM614 in tortoise / limelight
Reference: Robert Marc RM740 in brown