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.