Runescape - What comes after batwing armor for pure mage f2p characters?

I'm currently playing a pure mage f2p character and I'm approaching batwing armor. After looking around a bit, I cant seem to find the next tier. I know mystic armor exists but it's roughly the same level as batwing armor.


Actually they aren't the same. Mystic is better.

Batwing is tier 30 armour, while mystic is tier 50.

There's also battle robes which have recently become F2P, and they give a magic offence bonus.