Keep students standing comfortably through the entire class. The ?” thick, high-density, polyurethane foam core reduces fatigue and supports their feet, knees, hips, and back. A beveled edge prevents tripping. At 34”L x 20”W, one student can comfortably stand or move around on the mat. Premium construction grips the floor and is non-abrasive, causing no damage. Weighing less than 5 lb, teachers and students can easily pick up and more the mat to another desk or storage.