Float away! The Butterfly Ring is made of stretchy soft jelly. Just slip this one size fits most sexual enhancer ring over the base of the cock to maintain a firmer erection. The removable .5" x 2" bullet slides into the clit tickling butterfly and allows the whole ring to gently vibrate, pleasing both of you. The bullet requires four watch size batteries (eight included). Take this butterfly for a spin and explode with powerful ecstasy!