Leaks like crazy. Even when the cap is fully screwed down all the contents of the can just pour through the threading. It's fun to write with, but useless for missions because it's not portable at all.
Pretty thin as far as sweatshirts go. That could be a pro or a con depending on preferences or where you live. Otherwise, it's of good quality, the highlighter green really pops!
I was a little apprehensive about these but got the black ink kit on sale from an art store.
It definitely stains. I think it might contain butimen. All in all it's a good ink, leaves a ghost (size depending on solvent used to buff and time spent buffing).