This hard floor mat is 2 mm thickness, designed for use on all hard floor surfaces such as vinyl, hardwood, laminate, stone, tile and concrete, etc This clear mat is smooth on one side and grinding on the other. When your floor is smooth, please put the grinding side facing down. If your floor has texture, please put the smooth side facing down This home office chair is transparent and clear that allows you to still see the beautiful wooden or texture floors underneath Made PVC material, gives your floors and furnitures the best protection. Our PVC chair mat for hardwood floors are easy to clean and storage when not in use. The chair mat will turn flat soon when in comfortable room temperature The lip-shape design is well suited for home or office computer chair Specification: Size:62x53cm 24.41x20.87 inch Material:PVC Package Includes: 1 x Mat