Post-it Super Sticky Notes stick twice as strongly as Post-it Standard Notes. They are versatile and ensure that your messages are highly visible. The yellow color is ideal for notes, messages, and reminders. These sticky notes adhere to vertical and hard-to-stick surfaces. They are made from PEFC-certified paper sourced from sustainable forestry and feature an adhesive that is 60% derived from renewable plant materials. The packaging made from recycled cardboard can be used for easy storage of sticky notes on your desk or in a drawer and can be recycled when no longer needed.