The Retreat Brolly System Extension is an extension for the Retreat Brolly System from Fox. With this extension you create an extension of 1 meter. Simply remove the front of the brolly, zipper the extension in and then attach the front to the extension. This creates a large brolly where two stretchers can be placed lengthwise. The extension has two zippers for attaching to the brolly so it can be used simultaneously with the inner dome. The unique attachment of the storm poles to the frame of the extension ensures that the brolly is extremely sturdy.