Post-it Pop-up Refill Notes are designed for use in Post-it Pop-up Note Dispensers (sold separately). 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) to keep the notes at your fingertips. Repositionable adhesive won't mark paper and other surfaces. Paper comes from well-managed forests where trees are replanted. Each pad contains 100 sheets.