While you wear these boots, your Speed becomes 30 feet unless your Speed is higher, and your Speed isn’t reduced by you carrying weight in excess of your carrying capacity or wearing Heavy Armor.
Once on each of your turns, you can jump up to 30 feet by spending only 10 feet of movement.
RollQuest summary Speed becomes 30 ft unless higher, not reduced by Heavy Armor or carrying weight; once per turn, jump up to 30 ft by spending only 10 ft of movement.
RollQuest ships the D&D 2024 SRD as a content pack, on a 5e character sheet that does the maths - roll from the sheet and let the numbers work themselves out. Free to start.