haha, yeah that's what i thought. They are about how these three kids are exploring a cave and find a chest, like a treasure chest, and when they open it up they get these different powers. ex. a power could be speed or something like that.
And the reason the books are called the three vests are because, durr it's about three kids and the reason they say "vests" is because when they activate there power a vest of light wraps around there chest so...yeah!! they are really good. Deffinatly not hard reading maybe a little harder than the chronicles of narnia.