These types of sandals have caused me, in the past, no end of pain. I can wear therm for a little while if they have a really wide and fitted area behind the toes and up the top of the foot, but I try to find sandals that have NO toe holds (those little toe garages, or a flip flop type) of any kind. Not an easy task. Between my dislike of the food bed of birkenstocks and my inability to wear flip flops, it's no wonder I'm not making friends quickly in Tucson!!!

I find it can depend on the fabrication of the shoe- if there are no seams on the toe post, and it is rounded, it's fine. But I can't stand wearing shoes with rigid backs (around the heels) or that go too high up around the ankle (I have quite narrow feet, and a lot of shoes hit me on the ankle bone), which makes shoe shopping outside of summer tricky!

I generally find them comfortable but I have to try them on. Not every pair fits right. Also, I find that I have to break in my feet every spring. Even sandals from previous years that I know were comfortable will sometimes hurt the first time I wear them in the spring.

I don't have a problem wearing these and in fact have several pairs of Haviana flip flops that I wear for boating . I also just added this quirky pair of sandals for casual wear:

http://www.ahnu.com/women-yoga.....or=PWDR#st...

The padded sole and the fact that they are closed at the heel makes them super comfy.

I recently purchased a pair of Teva Olowahu sandals and have found this multi band style much more comfortable to wear than the single band flip flops.
The come in a bunch of pretty color combinations too.