It’s a 3 piece set.
The earrings are really light so you won’t really be bother by them.
They are clip on, so even if you are not pierced, you can wear them.
The clasp has a really firm grasp. Shake your head, jump, jump to the ocean to save your captain, and they’ll stay put. However, the open-ness of the clasp is not that big so you might have to squish your earlobe just for a bit so they can properly hug your earlobe. You might find it tedious to put on but be secure that they’ll stay there