Colon Keychain by I Heart Guts Keep your keys close and your colon closer with this adorable keychain. Engraved back of keychain and display read: "Colon: You Move Me" Learn heaps of info about the colon on cardboard display back. Zinc alloy with soft enamel, colon measures 2 7/8" x 2.5". I Heart Guts puts a smile on your face and smarts in your brain.