In recent years, companies, consumers, and society have increasingly committed to actions aimed at protecting the environment. Thus, environmental activity has become central to companies’ strategies. Apparel is becoming a disposable product, resulting in a sharp consumption increase (Hwang et al., 2016). The fast growing rates of apparel products consumption and waste lead to an environmental crisis. Smaller brands as well as many multinational companies, including large chains started selling clothes made of ecological fiber. According to the Ethical Fashion Forum, green fashion refers “represents an approach to the design, sourcing and manufacture of apparel which maximizes benefits to people and communities while minimizing impact on the environment.” (Cervellon & Wernerfelt, 2012). The purpose of this research is to analyze the relationship between perceived effectiveness of green products, attitude toward advertising, brand attitude, purchase intention and green behavior intention and to identify how claim specificity types, cognitive style and sustainable involvement influence on the relationship between variables.