The Enhancer Glow Rings are 100% silicone, durable, thick and firm; yet soft to the touch and stretchy for comfort during wear. andnbsp;Three rings, each of a different size, are individually packaged within each set. andnbsp; All glow in the dark to add some fun to your bedroom! andnbsp;These rings may be used as a traditional cocking, around the testicles, as harness rings, and more! andnbsp;Please clean before and after each use with toy cleaner and enjoy with water-based lubricants. Glow in the dark3 Ring sizesStay hard all nightBody safe siliconePhthalates freeWaterproofMaterials: 100% SiliconeSize: Inner Diameters - 1.5, 1.375, 1.25, Ring Thickness - 0.25