Office Marshal PET Non-Slip, Clear, Rectangular Hard Floor Protection Chair Mat, 40" x 48" Highly durable Eco friendly PET chair mat - clear/transparent, allowing the aesthetic of your floor to show through. Designed to prevent against wear and tear caused by office chair casters - also suitable for general floor protection Allows your office chair to move freely while carrying out daily tasks, helping considerably reduce the risk of leg fatigue and stress To avoid damage to floors, these mats are free from chemical adhesives Made in Germany: Certified by TV Rheinland (a global provider of technical, safety, and certification services throughout the world).