Belly Armor Belly Band 99.9% effective at shielding radiation from cell phones, laptops and other devices Wear under or over clothes throughout your pregnancy Perfect for expecting mothers who prefer less snugness around their belly and a looser fit Lined with RadiaShield Fabric for protection against everyday radiation Size: 1 fits Pre-pregnancy size 0-4 US, Size 2 fits Pre-pregnancy size 6-10 US, Size 3 fits Pre-pregnancy size 12-18 US