The Vibrating Super Soft C-Ring features the initial top selling Super Soft ring having a waterproof removable bullet vibrator. The Super Soft Vibe Ring is 10 mm wide and stretchier than standard Tantus C-rings, creating a safe, beginner friendly accessory for couple's play that's both comfortable and exciting. Safe for you. Produced from Tantus own unique formula of 100% Ultra Premium Silicone. Simple to clean. Eco-friendly, hypo-allergenic, hygienic, boilable, bleachable and is it dishwasher safe. Unstretched diameter: 1.5 inches, extended diameter 4.75 inches