Horseshoes of a Zephyr

These iron horseshoes come in a set of four. While all four shoes are affixed to the hooves of a horse or similar creature, they allow the creature to perform the following feats:

* Move normally while floating 4 inches above the ground, allowing it to cross or stand above nonsolid or unstable surfaces (such as lava or water).
* Leave no tracks and ignore difficult terrain .
* Move its Speed for up to 12 hours a day without suffering fatigue from a forced march.