What does this cup holder attach to please?

Hi Stephanie, thank you for your enquiry, the Maxi Cosi Cup Holder attaches to the side of the Maxi Cosi Car Seat, however, we do recommend removing this when the seat is not in use. We hope this helps. If you follow the link https://www.babyonthemove.co.nz/store-locations/ this will take you to our online store finder. Here you can find contact details for your nearest Baby On The Move Store where one of our team experts will be happy to assist you in your product search and help answer any further questions you may have.