Enjoy super-stretchy erection enhancement with the strength of lab-tested True Silicone! RingO Pro XL. 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 XL measures a 1.7/8 diameter for a more comfortable feel. Simply wash it with soap and warm water and keep it in a cool, dry place.