Communicate in any condition with the 3M Post-it Extreme Notes. With the Post-It Extreme Notes, leaving reminders and notes in even the toughest conditions is possible. Made with Dura-Hold adhesive and paper, these post-it notes will stay in place whether it is hot, cold or wet. However, it’s recommendable to apply it to a dry surface before it gets wet. Additionally, they stick to a variety of surfaces such as concrete, tile, brick, painted and raw wood. The Post-It Extreme Notes are suitable for indoor and outdoor use. Plus, it removes cleanly so you won’t damage any surface. The pads come with 45 sheets that are 3 x 3 inches in size. Similarly, a pack provides 12 pads in total, with colors including green, yellow, orange and mint.