*Returns not accepted on any opened, used, or defective product. Contact manufacturer customer service directly for defective products/parts. From Nuna, this car seat adapter features: Quickly and easily connect any Nuna Pipa Series Infant Car Seat to your BOB single strollers* (2016 and newer models) with this adapter. It's compatible with all Nuna Pipa Series Infant Car Seats - except Nuna Pipa RX Lite Imported.