This chair mat can help reducing the noise of rolling chair, even playing games or working at night will not affect the others. Features: This surface can effectively prevent the caster chair from skidding Self-adhesive bottom can sticks on the hard floor firmly Can reduce the noise from moving chairs and walking Helps prevent rubbing or scratching against the floor from office chair Can protect the floor from dirt, stains and spills. Not suitable for the carpets. Specifications: Material: Polyester+ PVC Product Size: Thickness: Approx. 0.2cm S: 90x120cm L: 90x140cm Package Contents: 1 x Anti Slip Floor Protector Chair Mat Please Note: Due to manual measurement, there might be a tolerance in the product size. Please tear off the film on the back before use. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.