SkechersUltra Flex-First Take, Women’s Fitness & Cross Training Shoes, Black

Are they good to walking?

How high is the heel?

I usually wear a size 7.5 wide. Should I order a 7.5 or 8?

So i brought these shoes in a 8 but they are perfect fit, do they form to your feet more over time or is it better to get them a half size bigger?