Are the Versace Alia sandals comfortable for all-day wear?

They are a flat thong sandal with a leather-lined insole and a very low heel. That suits short walks and poolside use better than long days on pavement, where the thin sole gives little cushioning.

Can I wear them in water?

The upper is rubber, PVC and polyurethane and the outsole is rubber, so they handle wet ground and sand. The insole has leather, which does not like being soaked, so dry them after contact with water.

How do they fit compared with other flip-flops?

They are a slip-on thong with a fixed strap, so fit depends on your foot width and arch. There is no buckle or adjustment to tighten the strap.

What is the heel height?

About 0.2 inches, essentially flat. They are not a platform or wedge sandal.

Are they the same as the Versace Alia mules or heels?

No. This is the flat rubber thong version of the Alia line. The mule and heeled Alia styles use different uppers and construction.

What makes them different from a plain rubber flip-flop?

The leather and textile lining in the footbed and the Medusa and Greca hardware on the strap. The sole and upper materials are otherwise similar to basic rubber sandals.