Keep notes where you need them when you want them with Post-it® Pop-up Notes Original Canary Yellow Pop-up Refill. The size of each note is great for phone numbers and short to-do lists. Canary Yellow color helps you get your message across. Accordion-style design ensures that notes will pop up one after another when you use a Post-it® Note Dispenser. Pad Type: Pop-Up; Sheet Size (W x H): 3″ x 3″; Number of Sheets per Pad: 100; Ruling: Lined.