This package includes a 4" x 6" Envelope Folio Set in White that is part of the Foundations Collection from 49 and Market. This envelope set includes 17 die cut pieces and four small Neodymium magnets. This kit makes two folios that when folded on score lines measures 4.125" x 6.25" x 0.375". The pieces can be scored to mix and match various configurations of pockets and pages. They can be used in a horizontal or vertical layout. There are additional spine hinges included to create page turns in both directions if desired. This also includes two templates for cutting cover paper the flaps of the envelopes. You can also extend your folio with extra flaps. There is a warning included on the package from the manufacturer: Use with extreme care. Neodymium magnets are strong, brittle magnets that need to be handled with care to avoid injury. Keep away from children, adult use only. Strong magnets may be harmful to pacemakers. This envelope is acid free.