Only use strong clothes clips sideways so I’m pushing the areola meat into the nipple area. I apply them in the flesh back behind the nips and it doesn’t hurt to bad and forces what is in my areola area forward into my nip tube. Other than that just my daily pulling and playing with them. And of course all the others use and abuse of them. They get stretched out pretty hard sometimes and never left alone for long. I hope you have good luck with yours hopefully they will get long and fat like mine are.