PVC is softer and more pliable than other materials. It is best for mats that offer warmth and comfort to prevent foot strain and leg fatigue. Polycarbonate mats are more rigid and durable and are better suited for chairs as they provide more friction for the casters.
Polyethylene mats are more common. While not entirely safe or environmentally friendly, they are tough, light, and flexible, making them a good mat for all-around use.