Small and sturdy. Great kit, but the quality is not worth the price. I bought two of these kits. One for my coat pocket and one for my pack.
Since gear only works if you know how to use it, I challenged my 11 year old son to a fire starting contest. We each took one of the strikers from the SOL Origin. I got my fire going in a few strikes, but he was having a hard time getting sparks. I went over to show him how dad does it. It turned out that he was doing it right, but the flint had come loose in the striker and got jammed in the wheel.
Maybe it was just bad luck, but I would have been SOL if I was stranded with that bad striker. Plus, the rubber grip fell off of the striker that I was using.