Post-it Notes. What did you ever do without them? When your important message must stick practically anywhere, use Post-it Super Sticky Notes! Ideal for vertical and hard-to-stick-surfaces. Have an important message that needs to get through to others? There's a note for that! The 4"x4" size is perfect for sharing information with others. Canary Yellow is simple and smart. Contains 6 pack of Post-it Super Sticky Notes, 4"x4", in Canary Yellow color.