The studs pop off the black (jibbet?) parts that actually insert into crocs. The company needs better glue. I had to superglue them on to the base parts myself.I opened the package, almost all of the spikes were unglued, and the few that were ok, came off either putting them on the crocks or just from walking with them. I know they’re meant for decoration, but at least sell a good product!! Extremely disappointing!These came apart put them on your shoes and by the time I took them off at the end of the day all my studs had came off!The studs easily break off. Don’t even last a few minutes. Two broke as I was gently putting on to my crocs. Just horrible