The WooCommerce Booster provides an Off-Canvas Filter option for the Shop page. This is a premium module, available with StarterBlog Pro. You would need to activate the module from Appearance → Starter Blog Options → WooCommerce Booster → Off Canvas Filter.
Sometimes you want to display your shop page in full width but still have a left or right sidebar? Now it is easier with Off Canvas Filter feature. You can see a new sidebar in Appearance → Widgets → WooCommerce Off Canvas Filter, simply drag-drop the widgets from Available Widget in it.
You can find the Off Canvas Filter option in the Customize → WooCommerce → Catalog → Product Filter.