These silicone C-Rings from Tantus are broad for comfort and safety. A c-ring holds the testicles down and keeps the testes from contracting thus slowing down ejaculation. The constriction takes orgasm from about 6 seconds to up to 45 seconds. For best results, apply lube to the inside of the ring, then ease one testicle through at a time before finally pulling your cock through. Safe For Your Body: Made from Tantus' own unique formula of 100% Ultra-Premium Silicone Easy To Clean: Eco-Friendly, Hypoallergenic, Hygienic, Boilable, Bleachable and Dishwasher Safe. Diameter: 2"