This set of armour pieces will give you the following:
▪ 1x Unbreakable diamond helmet
▪ 1x Unbreakable diamond chestplate
▪ 1x Unbreakable diamond leggings
▪ 1x Unbreakable diamond boots

You must be online and need at least 4 slots of free inventory space at time of purchase, as you will receive physical items.