New Evolve Modern Shape Chair Mats from Dimex specifically designed for todays 5-Star wheel base chairs. Evolve Modern Shape Office Chair Mats are the result of extensive research on how we move in our workspace relative to todays office chair and contemporary furniture designs. The radius front and back corners of the mat work in concert with the circular footprint of the 5-star wheel base to offer more efficient use of the rollable surface of the mat, eliminating the useless portion of the squared off corners found on most rectangular chair mats today. Evolve patented designs bring chair mats into the 21st century. Replacing or repairing carpeted floors can be expensive. Protect your investment with a durable Evolve Chair Mat that is engineered to protect your low pile carpet from wear due to the wheels of your office chair rolling back and forth over time. Perfect for low pile carpet thicknesses of 1/4 in. or less. TIP: To determine the thickness of your carpet pile, place a penny on its edge down in the carpet pile (like measuring a tire tread). If Lincolns chin is above the carpet pile, your carpet is 1/4 in. or less. Color: Clear. Pattern: Solid Color.