When purchasing online, most people would base their purchasing decision on the item's reviews. Why? Unlike in a store where you can actually take a look at the product, there's nothing to inspect when you're buying through the internet. There's no way of knowing if the sizs are really what the sellercaompany says they are, or whether what you're buying performs as it should. Reviews are written by people who actually got to use the product – whether they bought it or was given as a free sample by the company for that person to test.