flipslips?

If the neoprene is of the close-celled version it would not be breathable. If its the open-cell version it would soak up water. Either way, it doesn't seem to be an appropriate material for shoe upper.

Neoprene stretches, which is why cold weather bike shoe and ski boot covers are made of closed cell neoprene. That seems to translate to poor support.

The big question on support and comfort is the insole support and fit and traction will depend on its sole. Walking on cobbles doesn't seem like a comparable use.

Now all that said, you need to look, touch and try then report back.

I like the idea of bring able to throw them in my purse, good for when you go out to dinner in heels and then can change your shoes to walk home. They dont need to be super durable if just used as emergency shoes, which is all they are good for as i note they haavr thin soles and no support.

Yes, good as an "emergency shoe" or to wear around your hotel room, but impractical for every day on the street use with regards to durability and support. Never underestimate the importance of durable, supportive, protective, properly designed footwear. I cringe when I see tourists in spaghetti strap filp-flops and the like, roaming around big cities, trails, etc.

Agree that these would not be good for long term walking, but they'd be fine for wearing on the plane, as hotel slippers, or when you need to give your feet a temporary rest from heels. I personally have these little black flat/slippers for just this purpose. They're not dressy but serviceable and much cheaper than the Flipslips or Teiks. A quick search found this brand that is more stylish.

...good as an "emergency shoe"....

Brings to mind the hotel fire (false) alarm going off in the middle of the night. Had to get dressed sufficiently decent to walk down the multiple flights of stairs in the deep middle of the night.

What KC and CL said... Many, many, many of the streets you'll want to see in historic areas are paved in uneven cobblestones (and what I would swear are broken dishes) that you will feel every dimple of, if you wear ballet flats as your go-to urban trek shoe. Not to mention foot blisters and leg fatigue! Don't worry about shoes being considered ugly ... Find something comfortable that can take a little punishment for daywear and save the neoprene shoes for your lounging. You'll be far happier!

And with regards to broken dishes and cobble stones, even if you DO see locals walking through all of this in high heels and the like, keep in mind that they're use to walking on such streets and probably already have a sixth sense about pavement conditions and are quick enough on their feet and agile enough to still survive it given their choice of footwear, i.e., they've had a lifetime of conditioning. Coming from say, suburban U.S. with clean and wide paved sidewalks, we're probably not as alert or agile with regards to what's beneath our feet.

...we're probably not as alert or agile with regards to what's beneath our feet.
Such as being alert to Paris sidewalks "landmines". At least neoprene flipslip "shoes" appear to be easier to wash and dry than waffle-soled trainers or Vibram type soled boots.

Thanks for all the info!! I think you guys have talked me out of getting them as walking shoes. They're a bit pricey for the "backup shoe" they're meant to be.

These don't look very comfortable or good for walking - maybe if you want to just wear them to the airport and when flying because they're easy on/off. They look like they have no arch support!