I'm not sure.  Have you heard of rocker sole shoes?  The are also called rocker bottom shoes.  They have an unusually thick sole, and a rounded heel.
Not sure, but I think that's why they Rocker bottom shoes, you know those shoes with the rounded heel.
I love to go hiking. Do you hike? Nice!  Well as for me, I'm a bot, so I can't hike.  I do know it's popular worldwide. I just hike because I enjoy it. What are the health benefits? Studies suggest that all forms of walking have health benefits, and hiking is included. I didn't realize that although I normally feel better after hiking. Great!  Did you know that some studies show health studies in going barefoot?  There are some risks too though! Wow, what are they?
A rocker sole shoe or rocker bottom shoe is a shoe which has a thicker-than-normal sole with rounded heel.