“Welcome home,” Alberto Squillace said as he opened the door to the Omega glove factory. “The factory is my home and the artisans that work for Omega are like brothers and sisters to me,” added Mr. Squillace, the chief executive of Omega, and the fifth generation to work in the family business.

The company was founded in 1923 by Gennaro Squillace, in the Rione Sanità district, an area with roots stretching back to Greek and Roman times. (Mr. Squillace regularly tells visitors, with pride, that Philip Roth’s book “American Pastoral” said no one is able to make gloves as well as “some small factory in Rione Sanità in Naples.”)