Laptop computers have high EMF emissions because the entire computer is at your fingertips. WrapTop slips easily under the base of the laptop and wraps around the front and top to reduce magnetic field emissions in the direction of your body. Reduces the field by 90%! Sides are left open so you can plug in a remote keyboard and mouse for access. Simple but effective design incorporates two different magnetic shielding alloys. Measures 15 inches wide x 9 inches front to back so it fits most laptops. Just slip it on. No tools nor assembly required.