Tailored to suit hard floors such as hardwood, tile, laminate, and vinyl, the Smart Home Products Basic PVC Chair Mat provides a seamless surface for your office chair to roll smoothly while safeguarding your floor from scratches, scuffs, and indentations. To unroll your chair mat: 1. Carefully unroll the mat and place it in a warm room of your house. 2. Use weights on all four corners of the flattened mat. 3. Depending on temperature, the mat may flatten in as little as 1 hour - for best results allow the mat to flatten for 24 hours.