Hi. This is my first post, & I wish to share my limited experience with the Bison Capsules. <br><br>I first learned of the Bison capsules earlier this week while browsing this forum, and after work, went to REI & bought the smaller size (only size they had in stock).<br><br>I, too, was not sure just what to do with it, but found that it will indeed hold at least one rolled US bill . I experimented with a $1 dollar bill, but other denominations are the same size. It might, just might, hold two bills, but I doubt it.<br><br>Fold it in half lengthwise, then roll it up. It's lying on my keyboard as I type this, with a US$1 bill in it.<br><br>BTW, I think this forum is FANTASTIC!!!