The husband greeted me with " What the hell did you do to yourself?" as I hobbled through the door after a 20 min hill run and 2 mile easy run. Indeed I wondered the same thing. Then it dawned on me. What felt like a minor wrinkle on the underside of my feet halfway through Sunday's run was actually the seam of the vapour barrier sock that runs from heel to toe, down the middle of the foot! Horrible painful blisters have made a home on the underside of my feet as a result. Although these socks worked well for 4-5 mile runs, they get a thumbs down for a 3 hour run.