Wearing Feiyue's has allowed my feet to supple and stretch, in a way they have not since my childhood. I received a horrible lower neck/upper back injury on a trampoline as a child, and a chronic slipped disk injury in my lumbar area in my adolescence. For nearly 30 years, I have not had a day without severe pain. Minimalist shoes from Feiyue allowed my feet to become supple, forced my gait to adapt, and now my pain is largely gone. What chiropractic care, massage therapy and excercise could not do, these shoes did. My first few pairs of Feiyues lasted a only few weeks when I first began wearing them, then blew out - now 7 months into a pair and they are still structurally solid and with some tread. It goes to show how minimalist shoes can change one's gait and thus soften and supple one's back and neck. I wear these shoes every day, change into boots at a worksite and back into Feiyues at the car. Even with trail-running and lots of walking on pavement, I average over 160 miles per pair. I am hooked on Feiyues! My only misgiving? The FE 1920 RF's do not come in Olive or Dark Brown. I believe they would be extremely popular with the sustainable agriculture crowd, with foodies and with conservationists, where all of my work takes place.