Due to the growing involvement of external stakeholders including pressure groups such as Greenpeace, sustainability issues have increasingly become a focus point in the business sector. Thereby, many businesses began to integrate sustainability into their corporate mission and vision. Similar to fast food consumption, fast fashion consumption has decreased well-being of both nature and humans. With the goal of reducing harmful impact on people and planet, apparel and fashion firms such as C&A, H&M, and Nike have been gradually shifting the use of conventional cotton to bio-cotton in their production of clothing. The aim of the present thesis is therefore to investigate the influence of different factors on purchasing intention of bio-cotton clothing among young business students. In connection to this, the research question of the present study is formulated as follows: “What kind of impacts do attitude, social norm, perceived efficacy of consumer, perceived availability as well as functional, monetary, and psychological risk have on the purchase intention of bio-cotton clothing among young business students?”  The present study was conducted quantitatively by using online survey method. The survey was distributed to a random sample of 220 young business students at Umeå School of Business and Economics (USBE). The research model of this study comprises seven hypotheses. Each hypothesis is assigned with a unique independent variable and a dependent variable (i.e. purchase intention). All the constructs are derived from the Theory of Planned Behaviour as well as from the Theory of Perceived Risk. Following a multiple linear regression analysis, it was revealed that independent variables including attitude, social norm, perceived efficacy of consumer, and perceived availability significantly affect the purchase intention. All influencers except perceived availability was found to have a negative influence on purchase intention. Although none of the constructs from the Theory of Perceived Risk was found to significantly affect purchase intention, a significant quantity of variance in the purchase intention was explained by all independent variables combined. This contributes to the current research gap since numerous studies have focused on the behavioural intention of organic food rather than bio-cotton clothing. This study’s findings provide insights to businesses that intend to market their bio-cotton clothing among young business students. Since the availability of bio-cotton clothing was found to be low, managers are advised to increase the visibility and benefits of such products by using online and offline communication instruments. Policy makers, especially those from developed countries, are advised to support informational campaigns to transform consumer behaviour.