This study examines the effects of product quality, design, brand image, and brand trust on purchase decisions. The population of this study consists of students from Universitas Muhammadiyah Purwokerto. A sample of 110 respondents was selected using incidental sampling with predetermined criteria. The regression analysis results indicate that product quality has a significant positive influence on purchase decisions, design has no significant effect on purchase decisions, brand image has a significant positive effect on purchase decisions, and brand trust has a significant positive effect on purchase decisions.