Rina was selected to participate in Olympic Marathon. She went to Al-Ikhsan Sport Outlet to buy new running shoes. Rina informed the seller that she wants Adidas Sport shoes that could give her best performance in Olympic Marathon. The seller recommended 'Nike Flash Zoom shoes which offers flexibility and padding that helps deliver more bounce with every step. Rina bought that shoes even though she insisted to buy Adidas brand at first. Nevertheless, due to the shoes' inflexibility, Rina fail to perform well in marathon.