Post-it® Super Sticky Notes stick twice as strong as Post-it® Standard Notes. They adhere extra firmly, are versatile, and ensure that your messages are clearly visible. The yellow color is ideal for notes, messages, and reminders. Post-it® Super Sticky Notes stick stronger and last longer. They adhere twice as strongly as Post-it® Standard Notes, ensuring your message gets through. These yellow sticky notes hold on vertical and hard-to-stick surfaces and are perfect for notes, messages, and reminders. They are made from PEFC-certified paper sourced from sustainable forestry and feature an adhesive that is 60% derived from renewable plant materials.