Once I got my first pair of wool running socks, I was sold. Wool is pretty much all I want to wear now, it's just so much more comfortable than anything else. I picked up a couple of pairs of these and they've been great ... heavy enough to provide some extra warmth on cold says, but not too bulky.
Different from your average gel, but much tastier. It kind of reminds me of baby food fruit purees, only it's obviously in a much handier form. It's easier to digest than regular fruit, and doesn't have the strange taste and consistency of regular energy gels. I also eat it at home, on plain yogurt!