I have found that the natural way to create a barrier against 5G , and/or Covid 19 is canvas underwear lined with heavy rubber. Can be made at home from catamaran sail, lining from adult rubber diaper-pant. Either bind rubber to canvas with epoxy or carefully microwave it to bond. Improves the posture, because it chafes like a bitch if you don't walk with perfectly erect posture. Considered more effective than Mormon holy garments. Advantage to canvas/rubber, then: posture. Advantage to LDS garment: protection against fate, evil spirits, and cooties in general.