HARApad EMF Protection - Laptop Radiation & Heat Shield (For 13" Laptops, Black Acrylic) 13.25" x 9.25" x .25", designed for 13" laptops Laptop radiation shield designed to block RF, WiFi, and bluetooth Provides EMF protection and helps cool laptop and reduce body's heat exposure Military-grade laptop EMF and EMR shielding Made in the USA with beautiful black acrylic