How do I sell something from my vault?

It keeps telling me that my vault is full and I should sell something. Unfortunately, I can't figure out how to do that.

The only way I have gotten to my vault is through the equipment screen. But, I don't see a sell option.

What am I missing?

If you get a new item for the Vault, but it's already full, there should be a line right below the "Your Vault Is Full" line, which says "CLICK HERE to see items in your vault". If you click on that, the name of the item in your vault will show up, and when you cursor over it, you'll see the item, and the option to SELL.

The other way to sell an item in your vault is to go to the blacksmith and below your gladiator's equipment on the right you'll see four item slots. That is your vault and you can mouse over those items to sell them.

Thanks Dainoji. That is exactly what I was looking for!