How much it reduces
Feather Falling reduces fall damage by roughly 12% per level, so IV cuts fall damage by about 48% before other reductions apply. Combined with the Protection line and the slow-falling effect, it makes long drops survivable that would otherwise be fatal.
The standard boots kit
Most players run Feather Falling IV, Protection IV, Unbreaking III and Mending on their main boots; Depth Strider III replaces Depth Strider's slot when watery travel matters, and Soul Speed goes on a separate pair for nether travel. Because Depth Strider and Frost Walker conflict, keep a second pair if you need both.
Where it pays off
- Exploring ravines and cave systems with long drops
- Building at height
- Nether travel over lava and cliffs
- Falling in the End while fighting the dragon
- Any hardcore world, where a single fall ends the run