A tried and true design combines a comfortable constriction band with a big vibration point placed to target a mate's outer sweet spots. 

In plushy soft jelly, BigO's ring portion fits comfortably and securely around the base of the penis (or base and balls), holding tight to enhance erection strength and overall stamina. Meanwhile, a removable bullet vibe placed in behind the textured tickler up top throbs against a playmate's outer sweet spots. Activate the first of three speeds and one pulse mode with the touch of a button- keep pushing to cycle through the rest.