The Cruz comes with a stroller frame, toddler seat, bumper bar, insect shields, rain, and wheels. And as difficult as it may seem like, it does not even take five minutes to put together.
You can fold and unfold the stroller in seconds by detaching a side clasp. So having a free hand to keep it still while unhooking is really helpful. However, you'll of course need both your hands to fold it back since it takes simultaneous pushing on both sides of the stroller bar.