Screaming O Ring O2 Clear Color. The Ring O2 double erection ring features a unique dual ring design that isolates the shaft and testicles for a more intense orgasmic experience. Made of lab tested body safe SEBS, the Ring O 2 stretches to fit almost any size member with a stretchy sling for snug testicle support, giving men and their partners enhanced sensations and longer lasting sex. Features double cock ring with testicle support. Isolates shaft and testicles for enhanced sensations. Made of lab tested body safe SEBS. Additional information latex free, phthalate free. Reusable.