Hi One Small,
If you would like to have the same slider that we are using in our demo then it’s a Revolution Slider Plugin which is a premium plugin and have to purchase individually. Our premium themes are fully compatible to this plugin.
By the way we have attached it in previous version But according to WordPress.org policy Revolution Slider Plugin has been removed because of non GPL code. You have to purchase it from the codecanyon.net individually and active it on your theme.
Purchase it individually so that you can have a good support as well as have automatic update feature so that you do not have to headache each and every time to update the plugin.
Revolution Slider Plugin is used in the demos are purely for demonstration purposes, and are used to give the visitor a functional preview of what the theme will look like once content has been added.
Thank you!