Just one bill fits in this little bugger. Wad it up tight, and keep it on your keys, or in a secret hiding place. Great way to surprise someone with the gift of cash with an unexpected yet classy presentation. Also a conveient way to carry emergency money! Once you cram it in this 'Itty Bitty Cash Stash' you won't want to spend it! Comes with a carabiner snap clip for key chain attachment, and it's equiped with a rubber o-ring seal.