The normal version requires level 78 Defence and last for 1 hour of combat. After the time is up, the platelegs will vanish.
A corrupt version also exists, which requires only 20 Defence and lasts only for 15 minutes of wearing (degrades even while not in combat).
Due to the Evolution of Combat update, these platelegs now have stats that are equivalent to those of the Vesta's plateskirt. The Statius's and Vesta's equipment sets are now essentially just melee style tanking gear. In fact these platelegs are now only marginally weaker than Torva platelegs.
Contrary to popular belief, this item does not degrade while using non-combat magic.