Ok so there are problems with getting the full description on this boot anywhere online-Even CAT's website does not tell everything about this boot.  The primary concern I had is: does this boot have a steel shank?  No where does is say it does or does not.  Called CAT and after some fumbling around they told me that this boot does have a steel shank.  If feels solid on my feet, but bends at the arch pretty easy the opposite direction of standing on a ladder, which tells me there is no steel shank.  I don't know for sure, but I'm a bit skeptical.  It's still a firm boot and very comfortable and solid around my feet, heels and ankles but since I don't think it's full steel shank 4 stars.  Overall I'm happy with the purchase just wish I knew for sure about the shank so I can make a well calculated decision when purchasing.  Here are some features of the boots:
-electrical shock resistant
-slip resistant
-oil resistant
-steel toe (as advertised)
-reinforced heel
-reinforced arch
-freeze & flame resistant
-waterproof (as advertised)
-full steel shank??? (I doubt it)