I WOULD NOT BUY THIS PRODUCT AGAIN IN MY OPINION. This product has no protective flange. And yet, it is intended for anal use. When I contacted the manufacturer, they told me that indeed that device lacked a flange, but that they could not return the unopened package because I did not buy it from them directly. It is a waste of money in my opinion and a dangerous device! Go with the Aneros Progasm instead.