With our anti-microbial ingredient – FS-Bio - incorporated into this chair mat’s material, you can be assured that this mat is protected from microbial deterioration 24/7. It does not wash off or wear away and lasts for the lifetime of the mat. The Advantagemat’s unique formulation is free from phthalate plasticizers (banned from children’s toys and medical instruments), lead, tin and cadmium. The safer choice for protecting your home or office flooring from wear and damage.