While it does have manual lumbar support adjustment, the front seats are still not very accommodating. (overdrive.in)
You slide into the snug fit front seats which are large units and extremely supportive, they get electric lumbar support adjustment as well. (motorbeam.com)
High trim levels in the third generation Prius include features like softex trim seats (that look and feel just like leather but are lighter in weight), headlight washers, parking sensors, premium JBL speaker system and electrically operated lumbar support adjustment for the driver's seat. (en.m.wikipedia.org)