This is a toe shoe, with many similarities to the Vibram FiveFingers. Their distinguishing feature (aside from the cool tread which looks like foot bones) is that they only have four toe pockets instead of five. No, this shoe is not made for a mutant sub-population with only four toes - the fourth toe pocket is designed to accommodate the last two toes of the feet. The intent is to facilitate the process of putting the shoe on the foot. The sole of the shoe is similar to a Five Finger sole, in that it conforms to the contours of the foot, and is quite minimal. The upper is made of a neoprene-like material that expands well and conforms to the foot. A single velcro strap at the top of the foot secures the shoe, with an additional velcro strap at the heal to adjust the overall fit.