4-pieces set to prolong your performance while stimulating both of you. Cock rings made of gliding-friendly jelly material. All rings stimulating nubs and spikes. Two of the rings can be combined with the included detachable vibro bullet. Colour: blue. Ø flexible. Size vibro bullet: 3.5 cm, Ø 1.5 cm. Free of phthalates according to EU regulation REACH. Please order batteries separately: 2 x AA.