You'll nevertheless have the ability to carry the child inside the baby car seat and make use of the stroller as always, using them independently. (babystrollersellect.com)
The arm bar is used for child passengers to rest their hands and is not critical for safe use of the stroller or replacement top seat. (us.britax.com)
The extended use of this stroller means you will get more use out of it. (mommystroller.com)