The Vibrating Super Soft C-Ring features the original best selling Super Soft ring with a waterproof removable bullet vibrator. The Super Soft Vibe Ring is 10 mm wide and stretchier than standard Tantus C-rings, making a safe, beginner friendly addition to couple's play that is both comfortable and exciting. Safe for your body. Made from Tantus own unique formula of 100% Ultra Premium Silicone. Easy to clean. Eco-friendly, hypoallergenic, hygienic, boilable, bleachable and dishwasher safe. Unstretched diameter: 1.5 inches, stretched diameter 4.75 inches.