For those who were interested in the Barefoot running
topic, here are some links related to minimalist footwear.
Briefly, minimalist footwear are made to give the most freedom to the feet with the least protection.
For this puropose they generaly features a thin sole (a few millimeters), flexible in all directions, no arch support and no difference in height between the heel and the front foot.
Upper is generaly made to let enought place for the toes and enough aeration for the foot.
Here is a list of minimalist footwear maker's Websites:
Terra Plana Vivobarefoot