Requip, also known as "pocket magic", allows the caster to store items in a "pocket like" dimension, hence the nzme "pocket magic". This pocket dimension allows the caster to summon the weapons or armor they keep in their pocket dimension with ease, at any time, especially during battle, which allows them to be able to adjust to the circumstances of the battle. However, there is a limit to how much can be stored in the pocket dimension. Requip can be used for simple, or combat related purposes, some people choose to use requip even just for changing clothes. Some skilled wizards that have achieved a higher mastery of the technique, can requip weapons, as well as armor in the midst of battle.Although the only characters mentioned in fairy tail that have been known to be able to requip armor, are Erza Scarlet, and the coordinator.