Custom Mat Company continues to lead all others with the only 100% recycled chair mat on the market today. Black means Green as the EcoMat is made from crumb rubber from tires. With sizes up to 50” long and 72″ wide there is no other like the EcoMat. While the EcoMat gives you an option to help keep rubber tires out of landfills they do have a slight rubber smell that will dissipate over time.