Cisco has rings of pleasure replicated all the way up to its long shaft for waves of repeated sensation. Cisco is made with Tantus' own unique formula of 100% Soft Ultra-Premium Silicone. and with proper care will last a lifetime. Diameter: 2.25. Length: 10.75. Made from Tantus' own unique formula of 100% Ultra-Premium Silicone. Eco-Friendly. Hypoallergenic. Hygienic. Boilable. Bleachable and Dishwasher Safe.