used when asking if something you have done for someone is satisfactory

Let me put a cushion behind your back. How's that? 让我给你背后加一个垫子。舒服吗？

"Could you close the window slightly?" "Sure. How's that?"

I can give you another blanket. How's that?

"Would you turn the music up a bit, please?" "Sure. How's that?"

"The water's a bit too hot." "OK, how's that? Is it better?"