At first I was excited to try them considering I am on my feet and walking on concrete over 7 hours a day. The shoes are very light and I can say that the discomfort I usually feel in my knees and shins has eased somewhat. However, that is where the good ends. The soles of the boots are very firm, so if you want to cushion your step a little, you need at least an insole. The heel is raised relative to the ball of the foot, which initially relieves stress on the Achilles tendon, but isn't idealβ¦