The Bugaboo Donkey 5 base includes almost everything you need to assemble your Donkey 5 Mono (except for the sun canopy). The box includes the essential hardware parts as well as the seat fabric, bassinet, side luggage basket and underseat basket. The Donkey 5 base gives you total freedom to style your stroller your way. 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. What's in the box: - Chassis (including grips) - Wheels and wheel caps (pre-assembled) - Seat frame & fabric - Bassinet bottom & fabric - Aerated mattress - Sun canopy wires & clamps - Rain cover - Side luggage basket (22 lbs capacity) - Underseat basket (22 lbs capacity)