From Minecraft Wiki
| This page contains content on features that may be included in the next update.|
These features have appeared in development versions, but the full update containing these features has not been released yet.
Phantoms will drop 0–1 phantom membranes when killed by a player.
|Potion of Slow Falling
|Phantom Membrane +
|Upcoming Java Edition|
|1.13||18w14a||Added phantom membranes.|
Issues relating to "Phantom Membrane" are maintained on the issue tracker. Report issues there.