Rock Solid products are designed by a team of cock ring specialists to fit comfortably be durable and restrict blood flow resulting in a firmer erection. The Stretcher is made to expand to your likeness providing comfortable ball support and intense sensations in the bedroom. Made of ultra smooth phthalate-free hybrid silicone this ring stretches and retains its original shape over time. Rock Solid products are made to last.Available in Black and ClearMaterial: Premium Phthalate-Free Hybrid SiliconeUse with water-based lubricants only