I bought this for my wife. I have a generic Nashbar butterfly handlebars on my bike and found them to be a huge improvement over the drop bars that I have been using for fifty-some years. I no longer race and so I never actually put my hands on the drops anymore. The butterfly bars give you several different handholds including two that are near anatomically neutral for your wrists. I was going to get the same for my wife but Nashbar was out of stock for two months to come (according to them). These were in stock and they had a 31.8 stem size that her bike needed.
THE GOOD: 1. they have a better length-between-bends proportions than the Nashbar for more comfortable hand placement.
2.The in-turned ends actually elevate a few degrees so you have neutral radius (the arm bone) positioning. On long rides that makes a difference.
THE BAD: This handlebar costs around twice as much. OTOH, over the years of use that extra cost is amortized - the comfort stays.