Sustainability is about how biological systems remain diverse and productive indefinitely. Long-lived and healthy wetlands and forests are examples of sustainable biological systems. People do not only focus on economy but also focus on social and environment. The Dow Jones Sustainability Index (DJSI) was created in 1999 which was based on economy, social and environment to evaluate and rank companies according to their corporate sustainability performance. In this paper we try to find out how to build sustainability index based consumers’ perception instead of company’s internal data and find what influence customers’ satisfaction upon sustainable fashion products in traditional fashion markets. The data was collected in Dongdaemun Market which is the biggest Korean traditional fashion market.