integrated seat belts
I have 2017 ford transit van seats... doubles and triple seats... they are cloth, they recline like an airplane seat.... have seat belts and headrests..and arm rests. they can unclip from the rails and be moved to different locations... They are the wider 17 inch wide seats....
I also have four seats from the front of 2003-2004 chevrolet pickup trucks.
again cloth, recline, more than the ford van seats, arm rest and head rest , in addition to the built in seat belts.
Ford pickup trucks of the same era also had seats with integrated seat belts.
some convertables have seats with built in seat belts too you are going to have to look around.
There are a couple of air ride seats from big rigs that have integrated seat belts, and you can get some pretty cush custom bus seats that have arm rests, belts and recline too..... My used seats, I paid about $125 a seat and they look new. The van seats are new, they have never been used.