the sole is all rubber so if you get hot in your office, your feet will begin to sweat.  Then you can never take your sandals off at work because they'll stink.  Or maybe its just me....

The top swede also appears to have a plastic undercoating, which contribute to the heat insulation of your foot.

They've held up to their first summer pretty good.. I need to figure out how to deodorize them and keep them from stinking so I can continue to wear them to work.