The Dillio Platinum Collection is made with platinum-cured silicone for the HIGHEST degree of purity. This ultra-clean silicone exhibits strength, durability, flexibility, and non-reactivity with bodily fluids and skin. It is often the material of choice for medical devices because of its many outstanding features. The solid suction cup offers superior performance and gives you more versatility & convenience during use. It was specifically designed to be used with the Body Dock and other universal strap-on harnesses.