Review on Biubee 4Pcs Vacuum Cupping Massage Pump & Tools For Full Body Relaxation by Jacob Guerrero

I don't know about correcting inverted nipples, but they are fun for play in a few places on the body. Lots of suction, just not that long length. Make sure you put a little lotion or lube around the area or you may get in from it stretching the skin. Very nice product and nice price. Ordering four of them off of Wish costs more with the shipping, and Wish is usually very cheap.