The first moment you use it you feel the ergonomics, use a good tape and it will be even more comfortable.
This SL-70 Ergo bar suits me very well. Very happy with it and have no complaints.
Like them but they are wider than I would expect from a 40, they do measure more like a 42 but some variance in where bars are measured from is expected. I would size down to the 38 if I bought again but they are just fine as is. Using them for gravel and they get the job done just fine and then some.
