Featuring the new TCT Technology which is a dual density rubber out sole with a dropped in dual density PU piece in the mid sole for additional comfort and the shock eliminator in the heal and a triple density removable insole for even more comfort. They are Ultra Lite and have a 360 degree welt construction for durability. They are the most flexible product on the market and are traditional in pattern and are 100% non metallic. They are 100% US Made.