This is a 5x8 foot Wonder League Robotics Competition mat.
Info on the competition: https://www.makewonder.com/en/robotics-competition/
Information on mat (purchased for $150): https://www.geyerinstructional.com/wonder-workshop-basic-white-mat-150cm-x-240cm-with-30cm-grid-competition-mat/
Mat is in great condition, but it does have drawings on it. My kids were learning about world religions at the time and made some religious drawings. They also drew Japanese dragons and Zelda :)
I'm including the original shipping tube that's great for storing the mat.
I'm happy to ship it, if you prepay the shipping label.