When you move on your turn in combat, you can double your speed until the end of the turn. Once you use this trait, you can't use it again until you move 0 feet on one of your turns. Using Burst of Speed does not count as an action in and of itself. (Example: You can move 35ft, use Burst of Speed to move an additional 35ft, and then still perform an attack.)

You are conditioned to the extreme weather of the wastelands and have advantage on all saves against extreme heat and cold.