Once per room, the wearer may use a melee weapon (using melee combat modifiers) to attack flying or levitating monsters. The monster must be in the air, not just at range. Each time this “melee-for-ranged” attack is attempted (whether the attack was successful or not), the wearer takes 2 points of Eldritch damage.
These boots do not confer the ability to fly/levitate, they allow the wearer to leap up, attack, and land safely back in the same spot from which they took off.