Wouldn't they be like these?
http://www.themindrelaxer.com/the-invigorating-massage-sandals-uses-uniquely-designed-rubber-bumps-to-stimulate-blood-circulation-in-your-feet/
(Attachment Link)
This is more like it
Show Image
(http://imshopping.rediff.com/imgshop/800-1280/shopping/pixs/17369/c/caihd0022._wooden-relaxing-acupressure-slippers-for-good-health.jpg)
There are many kinds of shoes around us, the one I share just for fun and I dont see it in my daily life. But the one you list here does appear :)
Thanks for your share and enjoy your day.