Understanding the factors that influence consumer’s online shopping experience is an imperative but challenging task for both e-retailers and marketing scholars. Website design is one of the critical factors relevant to online conversions. Although website design may vary across different retailers, add-to-cart button, which enables consumers to select items for eventual purchase, is a common feature that shared by all websites. In this research, we are interested in exploring how add-to-cart button may influence consumer’s online shopping experience. We focus on two important properties of the button: color and position. Specifically, we will examine two major colors used by e-retailers on add-to-cart button—red and yellow and two positions of the button— right and left side of the website. We investigate the interactive effect of color and position of add-to-cart button on consumer’s button-click intention and purchase decision.