I have a pair of VFF Treks and love them! Took them for 30 miles over 3 days and didn't have a problem. The trail was through Hell's Canyon (Idaho side) and is pretty rocky, although I have spent a lot of time previous to this in them my feet were only a little sore at the end of the day but good as new in the morning. They were the only shoes I took with me to make myself wear them, I had no socks either. Nights and morning temps were probably around 35-40 if not a bit colder, my feet were a bit chilled but nothing unbearable. I'm definitely going to be wearing them throughout the summer on my treks!
