They are meant to be stuck to cell phones, but as they are merely copies of Schumann resonances and other frequencies, they can be wore.
I would recommend some silver Tshirts and underpants, but if you feel bad with copper, you may fell bad with silver.... Some people swear by these silver Tshirts (from emf protection website).
I heard of a man, who had those pulsor rings around his hospital bed, and his wife swore it helped him (specially by sleeping). I don't remember which one he had, I would try the 3 in 1, just in case. They can feel pretty strong though...
I wear this emf protection jacket while I'm at work. It's from Israel. This company ships really fast too and they are very responsive to emails. I tested it myself with my Acoustimeter AM-10 and it protects very well from radio frequencies. I wear it while I'm driving too because cell towers are all over the freeways where I live.