Playmat Tube - Monster Protectors Prism-shaped Play Mat Tube - Wont Roll Off Surface and Easy in and Out Design: When you want the best, demand Monster Protectors. The number one brand in premium albums now introduces the newest addition to its line - Monster Tubes. Adorned with the Monster Logo and sporting a new revolutionary prism design, your Mat wont roll off the table, and your fingers can easily go in and out to remove your mat. You will never go round again!