The item pictured is an InStep bicycle trailer for children, likely a Quick N' EZ Double or Sync Single model in green and gray.
Key features include:
A folding frame design and quick-release wheels for easy, compact storage.
16-inch pneumatic tires with molded rims for a smooth ride.
A 2-in-1 canopy with a bug screen and a weather shield.
A five-point harness system to keep passengers secure.
A universal coupler that allows for easy attachment to most adult bikes.