Layered navigation is used to search for products by category or by attribute. Filterable attributes appear in an expanding section that lists each attribute value. For example, when a shopper chooses the Mens/Shorts category from the top navigation, the initial results include all products in the category. The list can be filtered further by choosing a specific style, climate, color, material, pattern, or price—or a combination of values.
This extension also provides price slider as well. Both are Ajax based that means customers don’t need to wait for the page reload.

nikol
Great extension! We bought it to improve the user experience of our website and products are much easier to filter and find now.