Xero ShoesMen's Genesis Sandal - Lightweight, Minimalistic, Travel-Friendly

I've had these for a few years. They're are ludicrously comfortable and so light that I can easily run while carrying them (on some of my routes I alternate between fully-barefoot and these).But, and this is a big "but", the sole is so flexible that it frequently rolls under my toes. This leaves them exposed to stubbing off something or skidding along the path. I've often been bruised or grazed by this.