Orange Yepp Maxi child bike seat attachment. Adapter also available. This thing is amazing! Super secure and plenty of room between rider and child. In great used condition. https://www.thule.com/en-us/child-bike-seats/rear-mounted-child-bike-seats/t... $40. Highland Park pickup. Photos available on request. <tamark@pitt.edu> - Tamar <tamark@pitt.edu>