ElectraStim x Mr. S Leather - World's Most Comfortable Silicone Electro Butt Plug. Designed in collaboration with Mr. S Leather, the largest and longest standing fetish brand in the USA (since 1979!) we've lent our electro expertise to their World's Most Comfortable Butt Plug for this Silicone Electro edition. Since 1997 this classic design has been a part of Mr. S's butt toy arsenal; this time though the World's Most Comfortable Silicone Electro Butt Plug is made from our proprietary blend of electro conductive silicone for an added oomph to play. We've retained all the heft of the original plug with a solid steel weighted core and a 'stealth entry' cable system that allows for comfortable and secure seated play. Compatible with all ElectraStim stimulators- sold separately.