Effectively helps to prevent damage to hard flooring caused by your office chair casters or wheels. Under standard use not crack, curl, break, scratch or discolor Multipurpose Use: Wood Floor protector,Computer/Office Mat. Suitable for hard floors including vinyl, stone, tile, wood, laminate and concrete. Not recommended for carpet, please see our carpet mat if you need. Ensures complete stability when used on hard floor surfaces.Under standard use not crack, curl, break, scratch or discolor it contains no polyvinyl chloride, no volatile , no special odor, for a healthy indoor environment. Hard Floor Chair Mats - Designed to EnsureQuality and Guaranteed Reliability These clear chair mats offer highly effective light transmission and allow the beauty of your floor to shine straight through. Due its many notable properties such as high impact strength and transparency With the users needs in mind, this mat is ergonomically designed to allow for effortless movement of office chair castors (wheels), in turn helping reduce stress in the workplace and also considerably reducing leg, and muscle fatigue. A non-slip backing provides complete stability (when used on hard floors) and holds the mat firmly in place while in use. Odor free and dirt- Sound absorbent properties recyclable Highly transparent For the purpose of protecting the environment, these mats may be packaged rolled. In such cases,may take a few hours to return to itsshape once unpacked. This chair mat is ergonomically designed to provide added ease of movement, it's very flexible, which proven to reduce leg fatigue by taking the strain off your legs. colour:Transparent color Material:PVC size:Square: about 80 x 80cm Thick: about 1.5mm Package Contents: 4 x Chair Mat Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.