Elastomer is a stretchy, highly flexible material. Elastomer?s durability and longevity make it a smart choice for long-lasting, high-quality toys like Spartacus Cock Rings. Free of latex and phthalates, elastomer can be used with any lubricant, oil, or cream. The Elastomer Metro Cock Ring?s elegant shape conveys a sophisticated appeal. It?s available in purple, blue, and black.