Features： Pattern (type): Square type Weight: about 1.98lb/900 g Size: about 55.2x35.5in./140x90cm Thickness: about 0.16in./4mm Material: 100% polyester/front & acrylic resin/back (with catechin) Anti Slip & Stady This mat prevents the floor from being damaged by chair legs and casters. Back side adsorption processing, mat does not shift even if the chair is moved. It is thin enough allows smooth movement of the chair casters, it isn't to catch the foot or caster on the mat. Safety & No Smell 100% recyclable materials. No smell, PVC free, BPA & phthalate free, and free from thin, lead and other metals. No Bend, No Creases The polyester and acrylic resin materiales in the chair mat helps it retain its straight shape and lessens the possibility of curves in the edges of the mat. Even when rolled up for a long time, the mat will lay flat once it’s in use. Freely Cuttable It can be cut freely according to the place of use and application, and it is convenient to use. Easy to Clean Even if you apply a vacuum cleaner, it will not be sucked up, making it easier to clean. If it gets dirty, it can be washed in a washing machine repeatedly. Perfect for Hard Floors Protect your flooring from scratches and dust of any kind with this perfect office floor mat for hardwood floors, tile, laminate, vinyl and linoleum. NOT suitable for plush carpets or half rug. Package Includes: 1x Chair Mat 1x Instruction Manual Notes: 1. This mat is designed for hard floor only, not made for pile carpet. 2. It is rolled up in the box. It will take about 1 day to flatten automatically, we recommend that putting some books on the 4 corners for avoid mat edge and corner warped.