This 7 Days to Die mod utilizes the in-game Developer Rocket Boots but makes them a little more reasonable. You can also craft them. They can also be bought at Traders for a high price and sold, too.
The forum topic of the mod is here.
Credits: Gopher
Not bad, but not good !!!
They just dissapear after some use of them !!! I jumped maybe 20 times and i was barefoot then…