Both :P

Masteries are wonky (you should have the Bladed Armor tree for jungle masteries), but extremely poor rune choice get you a -1 from me. Do NOT run AD runes AT ALL on Volibear - he has zero AD scaling on his skills. Attack speed reds are a must. Your explanation for not running them is incorrect. They are strong after early game even without attack speed items because of Volibear's need to chain three autoattacks together for the bite.

I think you mean the skill sequence section as I explained the abilities there but I guess I can elaborate more on them and give some tips and tricks if that's what you mean(?) :P

Add an ability explanation and you are good to go :P

Thank you for the vote , I know what you mean and I might have needed to explain the runes section a bit better. The runes I use are probably not the best and I did mention that AS runes are very viable as well as MS quints. However, I find AS marks are only useful early on for a slightly faster jungle clear speed, they are not the best with this build especially when I don't build any AS items on Volibear whatsoever.
MR glyphs per lvl are good especially later on, having 150 or so MR late game is better than having a bit of AS IMO.
I'm pretty sure nothing is wrong with the armor seals.

I really, really don't agree with the runes, but otherwise it is a legit guide.