I had a very strange use for this purchase. I had read about a product called Ladycare which was for Menopause and other female hormonal struggles, fo me specifically the reviews regarding Hot Flashes were appealing. The price wasn't so I ordered the magnets to make my own version. Clipped them to my underwear and the relief was so swift that I wear them everyday. Still on the same 2 that I started with. So yea I love them. They are strong. My keys will stick to my panties but the relief is worth occasionally being magnetically pulled into the fridge. Lol. They are magnets and they act like magnets for a good price and good quality. No matter what your use is. They are strong.