I have always experienced some degree of numbness in my toes but I just dealt with it. Now that I'm doing longer races and training rides, I'd like to be as comfortable on the bike as possible. The numbness starts around 2 hours into the ride. I've tried loosening the straps, tightening the straps, tried thinner and thicker socks, but I still get numbness in my big toes. What is the deal? Maybe these shoes just do not work for me and I need to get new ones? Once thing I noticed is that when my toes do get numb, and I pedal out of the saddle, I can feel considerable pressure on my toes as if my feet are sliding all too freely in my shoes. Tightening my shoes does not remedy this.