Got this for my wife, swapping out a conventional (plastic) toilet seat, albeit elongated.  Kohler nailed this one.  Easy installation, and with a quick-release feature. That's new.  The French curve has a bit more seat width and curvy contours that are especially comforting for big butts, not that anyone I'm married to has a big butt...  The soft close feature should be mandatory for all toilet seats. You just flip the seat down, and it gradually descends without making a bang.  I like the fact it's plastic, easy to clean, durable.  This seat has rubber bumpers that prevent it shifting from side to side, like cheaper seats allow (I know because we have two other bathrooms with cheaper seats).