cSlow city movement was born in 1999 in "Chianty", a town of Italy. Afterwards, many cities from many countries, which do not will to become one of the homogenized areas created by globalization and strive to preserve their local identities and characteristics, joined the "slow city" network. "Cittaslow" cities differentiate from other cities through making the local crafts, tastes and arts meaningful for today's people, controlling pollution, taking precautions for a healthy and sustainable life, promoting environment friendly energy resources and supporting local producers. There are many cities in Turkey having the potential to become slow city. Seferihisar is the first "slow city" of Turkey. The purpose of the study is to analyze the evaluations of the local people living in Seferihisar about their life styles and their city as "slow city" in terms of sustainability and to investigate their views about the life styles of the industrial world and the voluntary simplicity, which are determinant in issues of life styles and quality. The case study method was used in this article. Findings of the study indicated that participants are happy to live in Seferihisar and happy with Seferihisar as "slowcity", and prefer voluntary simple life styles.