Enjoy super-stretchy erection enhancement with the strength of lab-tested True Silicone! Screaming O RingO Pro XXL features a seamless stretch-to-fit design with a wide flat band that stays firm and secure for a longer-lasting experience. Made of 100% body-safe silicone with softer flexibility, RingO Pro XXL measures a 2.25â   diameter for a more comfortable feel. Features: 100% True Silicone penis ring stretches to 2.25â  . Seamless stretch-to-fit design. Wide flat band for firm, stay-put fit. Additional Information: Latex and phthalate free, Water Proof, Wireless, Reusable.