Polyester Blend The natural translucent finish and embossed top surface are ideal for obscuring worn and damaged flooring. Prevents wear and damage to carpets often caused by chair casters and footwear. Ideal for use with a computer desk or workstation in the home or office Rigid top surface with low roll resistance for a “easy-glide” chair movement. Guaranteed not to crack, chip, cup or shatter under normal use and correct application Scratch resistant surface texture. Mats are stain resistant with surface contamination easily removed. Formulated to dramatically limit the visibility of caster tracking. Compatible with under floor heating systems Manufactured from ozone-friendly, high quality and 100% recyclable Polypropylene. Easy and effective recycling properties for end-of-life re-use. Odorless and toxin free. PVC, BPA, tin, lead and cadmium free Manufactured using 50% renewable energy from solar power and incorporating up to 30% recycled material Supplied folded in half for efficient and economic shipping, a reduce carbon foot-print and improved customer value. Quickly unfolds for instant use. Also ideal for easy storage and lifting when cleaning of flooring underneath the mat Please note, due to the manufacturing process this product has a +/- 5% size tolerance. All measurements are rounded to the nearest inch New Supa-Gripper spikes for low pile carpets up to 1/4" thick including padding 5 Year Limited Warranty