Throughout the years that I've written about the potential health hazards of cell phone radiation, I've seen a lot of products promise protection from the radiofrequency (RF) signals that our wireless devices emit. They've ranged from the useless gold-lined radiation shields" to Pong's more respectable line of phones cases that promise to refocus RF energy away from your head. At CES 2018, a company called Spartan grabbed that promise of protection and took it below the belt with a line of men's underwear. Spartan's boxer briefs claim to block 99 percent of cellphone and Wi-Fi radiation with pure silver fibers woven into the cotton fabric. That Spartan is focused on protecting your balls is significant. Though brain cancer tends to dominate the debate over whether wireless signals are safe, other studies have suggested that cell phones decrease male fertility. Some health advocates who have long been involved with the debate, and even some government agencies (most recently, the California Department of Public Health), recommend that men not carry their phones in a pants pocket to reduce radiation exposure to your nether regions. If the potential danger concerns you, most of the typical recommendations like using a headset, texting instead of making a call (a lot of us already do that) and not sleeping with your phone don't cost a penny.