This glass vibrator picks up where the smooth cobalt vibrator leaves off.  This model has the addition of stimulating nubs that adds extra kick beyond what the fully internal vibrating pack can give.   It still comes with the familiar penis shaped tip that gives the user that ultra-realistic feeling.  Perhaps the best feature of this glass vibrator is the versatility.  As it is completely waterproof, it can also be used in the tub shower, swimming pool, hot tub, ocean....basically wherever you want.  For lube, we personally recommend Pjur water based for vaginal use, and their rear entry lubes for anal use.  Each vibrator also comes with its own padded storage pouch and two AA batteries.