The Bugaboo Donkey 5 base gives you total freedom to style your stroller your way. The box includes the essential hardware parts as well as the seat fabric, bassinet, side luggage basket and underseat basket (except for the sun canopy). Combine it with the Donkey 5 sun canopy to build a complete Bugaboo Donkey 5 Mono for your first baby. When a new baby is on the way, switch it up to Duo mode by purchasing the Donkey 5 Duo extension set. And if your family is welcoming twins, add our Donkey 5 bassinet fabric complete for the second newborn.