Naturalizer TS – Insoles Removable?

Does anyone know if the insoles are removable in these booties?   I caught part of the presentation at midnight, but did not catch that spec if it was mentioned.  I need to size up a 1/2 size to accommodate orthotics if they are not removable. I haven’t worn Naturalizers in years, but I really like the style of these Katrina booties.  Considering giving them a try.