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. Made from Tantus’ own unique formula of 100 percent Ultra-Premium Silicone. Unstretched diameter 1.5 inches. Stretched diameter 4.75 inches.