ES Robbins EverLife 36-Inch by 48-Inch Extra High Pile Series Anchor Bar with Lip Vinyl Chair Mat, Clear GREENGUARD Indoor Air Quality Certified Protects all carpets; essential for extra-high pile carpets more than 1- Inch thick including padding High performance chair mat for intensive use such as a multi-shift; super heavy use Exclusive Anchor Bar cleats hold firmly in place yet are gentle on carpet and fingers