I also have issues with numbness and it's not due to cold! I noticed after yesterday's painfull ride that the top middle strap had left an impression and what feels like bruising on the top of my foot. I also noticed I have some large veins going across there also. So could it be the issue of the straps cutting off blood supply to the toes on the top of the foot? Evryone seems so fixed on the bottom of the foot (insoles etc) I wonder if the top of the foot could be involved also?