Logitech Wave Keyboard
Logitech created this funky Wave keyboard sometimes in 2009.
This is one of the worst keyboard.
The keys for left and right hands are not split into 2 groups. So, your wrists still need to bend outward.
It just dents up and down, i suppose because your index fingers are longer so it dents down there.
If you don't mind straight keyboard, this might be a improvement over flat surface. But if you have any form of RSI, this keyboard is no good.
I went to local electronics shop and tested out this keyboard. It's lousy.
You know how some rubber dome key is such that sometimes when you try to press a key, it stuck and won't go down, due to the friction of the housing. The Wave keyboard's keys are like that.
If you really want ergonomic keyboard, see
Xah Lee's Best Ergonomic Keyboards
If you don't care for split setup, then i recommend keyboard with mechanical key switch:
List of Keyboards with Mechanical Switch
If you have a question, put $5 at patreon and message me.