Mystim Flexing Flavio Silicone Electrosex Toy is an innovative, bi-polar electrosex prostate stimulator made of 100% medical grade platinum silicone. Itâ s small dimensions and narrowing form makes it a perfect anal beginnersâ toy. Thanks to Flex & Stay you can bend Flexing Flavio in whatever form you desire, the toy will keep this form. Length: 90mm. Diameter: min. 13mm max. 30mm. Material: medical grad platinum silicone. You will require an e-stim device - like the Mystim Tension Lover (MY46000), or the Mystim Pure Vibes (MY46010) - to activate the poles.