Protect Hard Floors And Chair Casters: The chair mat for hardwood floor provides a protective barrier that shields your valuable hardwood floors from scratches, scuffs and damage caused by chair wheels. Please put the smooth side facing down, the rough side is up. Safe for Your Home: Made from non-toxic, odorless materials. Our desk chair mat for hardwood floor is safe for use in any home or office environment, providing peace of mind for you and your loved ones. Front Lip Extension: With a unique extended lip, this desk floor mat for hardwood floors provides under desk coverage and keeps your computer chair stable. Ideal for use under chairs at your computer desk / workstation at home or in the office Effortless Rolling & Anti Skid: This computer chair mat is designed with a lightly textured surface for effortless gliding without skidding around, enabling you to move around your workspace with ease and without any interruptions.