Post-it Pop-up Refill Notes are designed for use in Post-it Pop-up Note Dispensers (sold separately). Self-adhesive notes offer the convenience of grabbing just one note, with just one hand. The accordion-style notes pop up one at a time from a specially designed Pop-up dispenser (sold separately), keeping the notes at your fingertips. Notes are ruled so you can make neater notes. Repositionable adhesive won't mark paper and other surfaces. The paper in Post-it Notes is sourced from certified, renewable and responsibly managed forests. Each pad contains 100 sheets.