Laminate Chair Mat -Walnut-46x55 with Single Lip Solid, 1-piece construction 46x55 including 27x8 Lip -Walnut ( See Dimension Diagram Under Main Image) 3/8" thickness ensures this wood chair mat won't crack, dimple, or break. Ships flat and is a solid non-bendable design that simulates a hard floor surface. Stain, Scratch and burn resistant Each mat is hand-made and tested in the USA to ensure the highest quality.