Rooster Rumbler Vibrating Silicone Anal Plug. Medium size - perfect for Intro anal play. Smooth and Firm with flared base for Safety. 3 speeds . 4 patterns of vibration. USB rechargeable. Waterproof. Materials: Silicone and ABS Plastic. Dimensions: Overall Length - 4 inches. Insertable Length - 3.5 inches. Widest Insertable Diameter - 1.4 inches.