Slicers are visual filters. Using a slicer, you can filter your data (or pivot table, pivot chart) by clicking on the type of data you want. For example, let's say you are looking at sales by customer profession in a pivot report. And you want to see how the sales are for a particular region. There are 2 options for you do drill down to an individual region level. Add region as report filter and filter for the region you want. Add a slicer on region and click on the region you want. With a report filter (or any other filter), you will have to click several times to pick one store. With slicers, it is a matter of simple click.