I love these shoes, but after walking through a lot of airports this weekend, the arches of both feet were painfully sore.  Perhaps will will break in eventually.  I hate to pay a lot of money for an orthodic to replace the standard insoles. Advice for anyone with flat feet is to try these on before buying or before throwing away the Amazon packaging.

I am writing to update my above comments that were written after wearing these shoes for 3 days.  I emailed the manufacturer's help site and was advised 1.) there are no alternative arch supports available from the manufacturer; 2.) the tendons in the arch of the foot may be a bit sore at first, but will stretch to adapt with a bit of use. I have now worn these shoes for two weeks and am happy to report that the insoles and my arches have adapted to each other.