Tumbl Trak Non Skid Smart Mat (Colors May Vary) No more dangerous sliding mats with Tumbl Trak Smart Mat Sheets Increase the safety of your gym and turn your current mats into Smart Mats by placing a Smart Mat Sheet under one mat or in between two mats Both sides have non-skid material sewn to the vinyl to prevent dangerous sliding of mats Prevent sliding with Tumbl Traks Smart Mat Sheets Increase the safety of your gym and turn your current mats into Smart Mats by placing a Smart Mat Sheet under one mat or in between two mats Both sides have Non-skid material sewn to the vinyl to prevent dangerous sliding of mats Size: 30 inches x 30 inches