ES ROBBINS core line of chair mats have achieved GREENGUARD gold certification for low chemical emissions, making Ever Life chair mats a healthier option contributing to better indoor air quality in your home or workplace. Protects flat to low pile carpets up to 1/4" thick including padding. For light office use. Choose a higher pile chair mat if usage is over 8 hours or 200+ lbs. Anchor Bar chair mat cleat system holds securely, yet is gentle on carpet and fingers. Crystal edge creates a smooth finished edge while providing effortless roll on/off mat. High quality, clear mat protects carpet from wear and tear. GREENGUARD certified for low chemical emissions to ul 2818. Made in the use. Mfr. Lifetime "no crack mat" limited .