I have to go up one flight to my condo, and some days it is a huge effort to carry my bike (or groceries etc.) up. And I am not yet 50, and I lift weights twice a week. So I totally understand your concern.
(I have no idea how much that bike weighs; a visit to the dealer is probably your best bet, especially if you bring the Ruby for comparison.)
- Gray 2010 carbon WSD road bike, Rivet Independence saddle
- Red hardtail 26" aluminum mountain bike, Bontrager Evoke WSD saddle
- Royal blue 2018 aluminum gravel bike, Rivet Pearl saddle
Gone but not forgotten:
- Silver 2003 aluminum road bike
- Two awesome worn out Juliana saddles