A memo pad, a pencil, a knife, a lighter are in. It isn't wet because it is a waterproof case. A ball-point pen is the most suitable because first of all I can write a pencil in it at any time and we are light weight, a miniature though I can't sometimes write it in the rain and the cold districts. Take this out in the summit of a mountain and the fork, and I write down time and a state. I can't remember details, and mountain line notes aren't put together after I come home if I don't record it in the blister. I put it because there is feeling of relief when I can see a lighter.