I have these, 380 mm width.
http://www.bontrager.com/model/09192
My bike (Madone WSD) came with the same bars in a 400 mm width, but I was having neck pain so I switched to the narrower bars.
I find them to be pretty much perfect, comfortable when riding in the drops and easy to reach the brifters.
- 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