Nuna DEMI Next Sibling Seat vs UPPAbaby PiggyBack for Cruz V2 and V3

They're made for different strollers: check each fit list. The PiggyBack for Cruz V2 and V3 goes to 55 lb; the DEMI Next Sibling Seat to 50 lb.

Only the differences are shown.

Nuna DEMI Next Sibling SeatUPPAbaby PiggyBack for Cruz V2 and V3
TypeRide-on board or second seatRide-on board or second seat
Fits these strollersNuna DEMI next strollerCruz V2 and Cruz V3 only. Not compatible with previous Cruz models.
Child weightUp to 50 lbUp to 55 lb
Weight10 lbNot listed
Size9 × 16.5 × 36.5 inNot listed
MaterialRemovable merino wool insert; water-repellent UPF 50+ canopy fabricNot listed
Maker's use notesMaker lists birth to 50 lb and up to 45 in tall. When used with a bassinet or infant carrier, those manuals' limits apply.Maker limit 55 lb. Described for older toddlers and big kids.

Nuna DEMI Next Sibling Seat

A full second seat for the DEMI next with forward and rear-facing modes, four recline positions and a rain cover included.

  • Mounts top or lower position
  • Rain cover included
  • Converts to mesh for summer
  • Only listed for DEMI next

UPPAbaby PiggyBack for Cruz V2 and V3

Ride-along board that lets an older child stand behind the stroller.

  • Attaches to the stroller