The 31.8 cm (12.5 inch) [277 x 156 mm] is a screen size measurement used for laptops and tablets. Our website sells a range of screen protectors specifically designed to fit this screen size, ensuring that your device is protected from scratches, smudges, and other types of damage. These screen protectors are made from high-quality materials and are easy to apply, providing a clear and durable layer of protection for your device's screen. Whether you're looking for a basic screen protector or a more advanced option with anti-glare or privacy features, we have a variety of options to choose from to suit your needs.