Clear Office Chair mats with Lip for Low pile carpet | Manufactured in the USA by dime | Phthalate and BPA freedime office chair mats offer the best overall quality office chair mat available on the market today. Dime chair mats are designed to provide industry leading clarity, superior wear resistance and a surface that allows chairs to move freely. Replacing or repairing carpeted floors can be expensive! Protect your investment with a durable dime chair mat 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 edge down in the carpet pile (like measuring a tire tread). if Lincoln's chin is above the carpet pile, your carpet is 1/4 in. Or less. Technical Details46 in. X 60 in. Rectangle design is ideal for big tall executive chairs studded gripper backing holds the mat in place while in proprietary material formula is engineered to provide industry-leading performance and clarity Green guard certified by UL for low indoor air emissions - Phthalate and BPA free passes rigorous roller wear, extreme temperature change, humidity and stain resistance testing chair mats are packed and shipped in our exclusive box that allows your chair mat to arrive rolled in a cylinder to protect the product and provide the best possible unpacking experience. Not intended for use on hard floor surfaces or carpet thicknesses more than 1/4 in.