The Bugaboo Donkey 5 Duo extension set base includes the essential hardware parts to convert your Bugaboo Donkey 5 into a side by side double stroller. You can combine this item with the Bugaboo Donkey 5 Mono stroller and the Bugaboo Donkey 5 Duo fabric set to create a complete stroller for two children of different ages. This extension set comes with the basic elements for making your Bugaboo Donkey 5 ready for more: a seat frame, sun canopy wires set, sun canopy clamps, and the leather-look carry handle for an extra stylish touch.