Time to unfold this foldable's ultra-thin folding glass!

The top layer is indeed plastic, which sorta defeats the purpose of a "glass" display—i.e., its scratch-resistance.

You can tell the middle layer is glass because of the way it shatters when we poke at it. Oops.

Overall, we rate this glasstic display a solid meh.

It's thoughtful of Samsung to offer one-time screen replacements for $119 (if you buy the Z Flip before the end of this year)—but $499 for subsequent repairs is a tough pill to swallow, especially considering how easily this thing scratches.