What's the most comfortable boots / shoes for automotive shop work? Obviously walking on concrete all day? doing what mechanics do....it's my brother's birthday...just thinking it would be a nice gift.

A new pair of Redwings would be a very NICE gift.
Redback brand boots. I know Matco and Cornwell has them on the trucks
I got him these Irish Setter boots which are made by Redwing...his previous pair were tactical boots with nylon inserts...I thought these sort of covered that area plus classic leather look...
I buy 2 each sale. I wear these all the time, I don't really own any other shoes. I even wear new ones under nice pants to go out in. Wore them to Disneyland last year too 