You may be worried about getting harm from computer radiation. This excellent screen film can help you avoid this case.It goes through a special process which gives is a hard and durable surface. It does not use adhesive butuses static to attach it firmly to the screen， this eliminates the bubble effect. It is very safe to use and has no adverse affect whatsoever on your equipment. It is durable， washable， reusable with no residue during removal， great protection for your laptop and notebook LCD screen. Don&acute;t miss out!                                    Features              <br> Great protection for your laptop and notebook LCD screen<br> Durable， washable， reusable with no residue during removal<br> As same inch， long and wide is different<br> That we will take our dimension for standard<br> This prevent myopia screen guard protector film can protect your eyes<br> With high anti-static performance， this screen guard protector film can remove glare， improve contrast<br> It is very safe to use and has no adverse affect whatsoever on your equipment<br> This will protect your screen from scratching and normal use damage <br>                                                            Specifications             Screen Protector Dimensions     (13.50 x 7.56)" / (34.3 x 19.2)cm (L x W)    <br> Material     PET    <br> Weight     0.88oz / 25g    <br> Compatible with     15.6" Laptop      <br>                                                             Package Includes            1 x 15.6" LCD Laptop WideScreen Matte Protector <br>                                                            Extra Info            Use Step:<br>1. Measure the size of screen guard and screen<br>2. Mark the screen guard for cutting<br>3. Cut out the screen guard <br>4. Clear the screen carefully， remove the dust and contaminants <br>5. Peel off the label No.1 layer half of screen guard<br>6. Stick the screen guard carefully and slowly<br>7. Peel off the label No.2 layer