Hi there @Buck !

Thanks for reaching out to the Community with your question.  If you have been wearing supportive insoles for a while, I'm sure you are aware that they do take up some volume in your shoe.  Most Oboz boots are not incredibly low profile so they should be able to accommodate the insoles of your choice.  It is recommended that you remove what comes inside the shoe and replace it with your insole.

Hope this helps!

At REI, we believe time outside is fundamental to a life well lived.