Post-it Pop-up Refill Notes are designed for use in Post-it Pop-up Note Dispensers (sold separately). Design offers the convenience of grabbing just one note, with just one hand. Alternating color design keeps your ideas looking fresh. Accordion-style notes pop up one at a time from a specially designed dispenser (sold separately), keeping Post-it Notes at your fingertips. Pads are the perfect size for notes, numbers and lists and part of the Ultra Collection. Repositionable adhesive won't mark paper and other surfaces. Paper used comes from well-managed forests where trees are replanted. Each pad includes 90 sheets.