When conditions make communication tough, Post it ® Extreme Notes make leaving notes and reminders simple, so you can get the work done. Made with Dura Holdâ„¢ Paper and Adhesive, these notes will hold up in hot, cold and wet conditions. They stick to tough and textured surfaces like concrete, raw and painted wood, and tile (not recommended for use on paper). Make sure your message is seen with a note that sticks in tough conditions. Removes cleanly. This pack includes 2 pads of Post it ® Extreme Notes 76mmx76mm. Each pad has 45 sheets. Assorted colours.