For vaginal stimulation, the best are geisha balls. These balls will strengthen your pelvic floor and vaginal muscles. This will cause you to have much more powerful orgasms. Try them in the shower.
Characteristic:
Material: 100% silicone, ABS
Product size: 17*4*3.4cm
Product weight: 0.073kg
Water resistant, phthalate free.
Package Size: 26.3*10.4*4.6cm
Package Type: Clam Shell
Packaged Weight: 0.112kg
Box size: 58*40*43cm
Product color: Pink