Acquisition
At the end of the Halls of the West right. The boots can be used to reach the exit to the Alik'r Desert if you don't have Whirlwind Sprint.
Notes
- Actual speed multiplier: 200%
- Although their enchantment is slightly weaker than the enchantment of Boots of Blinding Speed, the user does not suffer a penalty to vision, making them a very good alternative.
Trivia
Spring-heeled Jack is actually a character from English Folklore, more info provided here.