Did you ever wear your favorite new dangling earrings and suddenly notice that phone call or high neck sweater or collar on your winter coat knocked an earring right out of your ear ? You'll never have to worry about that happening again if you purchase these earring backs. THey fit tight and strong and work like magic. You can answer the phone with confidence. Wear that chunky sweater and that warm high neck winter coat without having to check whether or not both your earrings are still in. And they are virtually invisible! I highly recommend these earring backs to keep all your earrings in your ears !