Being a nurse working 12 hours shifts, it is quite imperative for my feet (and, hence, my knees and back) to have good support throughout the day. Clarks do the job! They are light weight, flexible, and I like the cushioning on the heels. It absorbs a lot of the shock for someone like me who is very heel-heavy whilst walking. I highly suggest these to anyone who is going to be on their feet a lot!