Post-it® Super Sticky Notes stick twice as strongly 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. 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 composed of 60% raw materials from an annually renewable plant.