This is a very casual, sneaker like shoe. It is SO comfortable. The sides are lined, but the inside of the shoe itself is not - it's just on the sides that you see in the picture. There is a removable insert so you can put your own orthotics in them. I leave the sides up when i wear them because it gives a little more support and keeps me warmer. The 2nd day I wore them, I walked in a fundraising walk - miles - and they were VERY VERY comfortable. No pressure points or anything. i highly recommend them!!! They are like a much nicer looking Converse.