Includes lots of accessories. Never used infant sling. Replacement seat cushion new in bag although old one is fine. New replacement safety flag although old flag also fine. Includes running/jogging wheel as well as strolling wheels. Bike attachment and two receivers so you can have two bikes ready to tow. One QR and one Boost through axle attachment for the receivers. Might even have another QR as well. This model has a suspension system that really works. Carrier bag on the back, two position handle. Everything you need really.