All protean items are stackable, allowing easy training of the associated skills. They also work in conjunction with portable skilling stations, bonus experience, brawling gloves, and Double XP Weekends, making them popular to save for use during bonus experience events. All protean items can be turned into any other protean item using a right-click 'Convert' option, at a 3:2 ratio. Protean items cannot give skilling pets.