Speed Boots

An idea for a boot sidegrade struck me recently while playing Ocarina of Time. In that game, there’s a pair of boots you get which let you walk on air, but have reduced traction (you slip around as if on ice). While my idea isn’t exactly the same, the inspiration is worth noting. The version I had in mind would increase your movement speed, instead of allowing you to walk on air. The loss of traction would be the downside though. As for the amount of armor it would grant, I would say somewhere between iron and diamond, so 2.5?