Equipping things bought from the great exchange in runescape?

Items bought from the grand exchange will either be noted, or in a box will the full set of the armor you have bought if the item is noted this is simply solved by putting the item into your bank, and withdrawing it again. if the item is in a box, you must first talk to one of the grand exchange people and exchange your box with your items in for the actual items, you then will be able to equip any item.