I've asked by other girl about my breast and what I'm doing. One girl wrote she's having problems with cups cracking. I have had no problem with mine and not sure what brand I have but this problem comes from too much pressure. Breast enhancement is a long process and you are using too much pressure. It's like AA one day at a time with light or med pressure for 30 min a day. Also I massage my breast 3 to 4 times daily for 15 min. Usually bent over with them hanging. To form them light breast exercise; hands in front of you in prayer position and squeeze 20 - 50 times. Hope this helps.