Saw someone with a 1994 Marin Eldridge Grade yesterday, in original condition, exactly the same as the one I had from new back in the day…
Anyway… 560mm wide bars with bar ends on were no good back then, and are not really much cop now either! Still looked retro cool though.
Anyway… Bontrager do a flat bar, 640mm wide, comes std issue on a number of Trek bikes. It’s called the “Big Sweep”. It as its name suggests, has quite a lot of sweep, about 15 degrees iirc. The RaceLite version is bloody light too, about 170g. Search eBay or speak to your local Trek dealer. I tried some briefly, but 640 was just way too narrow! Moved back to 710 on my hardtail and up to 760 on my full sus and it feels soooo much better all of the time to me!